SWIDLER BERLIN SHEREFF FRIEDMAN, LLP
                     THE CHRYSLER BUILDING                WASHINGTON, DC OFFICE
                     405 LEXINGTON AVENUE                THE WASHINGTON HARBOUR
                      NEW YORK, NY 10174           3000 K STREET, NW, SUITE 300
                   TELEPHONE (212) 973-0111                WASHINGTON, DC 20007
                      FAX (212) 758-9526      (202) 424-7500 FAX (202) 424-7647
                       WWW.SWIDLAW.COM


                                                               November 1, 2000


Prudential National Municipals Fund, Inc.
Gateway Center Three
Newark, New Jersey 07102

Prudential Municipal Series Fund
(Massachusetts Series)
Gateway Center Three
Newark, New Jersey 07102

Dear Sirs:

         We are acting as counsel to Prudential National Municipals Fund,
Inc., a Maryland corporation ("National Municipals Fund") and Prudential
Municipal Series Fund, a Massachusetts business trust ("Series Fund") in
connection with the proposed transfer of the assets of the Massachusetts
Series ("Massachusetts Series") of Series Fund to the National Municipals
Fund in exchange solely for Class A and Class Z shares of the National
Municipals Fund (the "Shares"), and the assumption by National Municipals
Fund of Massachusetts Series' liabilities, if any, pursuant to an Agreement
and Plan of Reorganizations (the "Agreement").  The transactions contemplated
by the Agreement are collectively referred to herein as the "Reorganization."

         We have participated in the preparation of the National Municipals
Fund's Registration Statement on Form N-14 (the "Registration Statement")
relating, among other things, to the Shares of National Municipals Fund to be
offered in exchange for the assets and the assumption of the liabilities of
Massachusetts Series, and containing the Prospectus and Proxy Statement relating
to the Reorganization (collectively, the "Prospectus"), filed with the
Securities and Exchange Commission (the "Commission") pursuant to the provisions
of the Securities Act of 1933, as amended (the "Securities Act"), and the rules
and regulations of the Commission thereunder. In addition, in connection with
rendering the opinions expressed herein, we have



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Massachusetts Series)
Page 2

examined originals or copies, certified or otherwise identified to our
satisfaction, of such other documents, records and instruments as we have deemed
necessary or appropriate for the purpose of rendering this opinion, including
the form of the Agreement included as Attachment A to the Prospectus.

         In our examination of the foregoing documents we have assumed the
genuineness of all signatures, the authority of each signatory, the due
execution and delivery of all documents by all parties, the authenticity of all
agreements, documents, certificates and instruments submitted to us as
originals, the conformity of the Agreement as executed and delivered by the
parties with the form of the Agreement contained in the Prospectus, and the
conformity with originals of all agreements, documents, certificates and
instruments submitted to us as copies.

         In rendering the opinions expressed herein, we have assumed that the
transactions contemplated by the Agreement will be consummated in accordance
therewith and as described in the Prospectus. As to other questions of fact
material to this opinion, we have assumed, with your approval and without
independent investigation or verification, that the following facts will be
accurate and complete as of the consummation of the Reorganization (the "Closing
Date").

1.       The fair market value of the Shares to be received by each
         Massachusetts Series shareholder will be equal to the fair market value
         of the shares of beneficial interest of Massachusetts Series
         surrendered in exchange therefor upon the liquidation of Massachusetts
         Series.

2.       There will be no plan or intention by Massachusetts Series to redeem
         its shares prior or incident to and as part of the Reorganization. For
         purposes of this assumption, shares of Massachusetts Series required to
         be redeemed by Massachusetts Series prior to the Reorganization and not
         as part of the Reorganization but in the ordinary course of its
         business as an open-end investment company pursuant to Section 22(e) of
         the Investment Company Act of 1940, as amended (the "ICA"), shall not
         be taken into account.

3.       Pursuant to the Agreement, Series Fund will distribute in complete
         liquidation of Massachusetts Series, the Shares of National Municipals
         Fund received by Massachusetts Series in the Reorganization.

4.       The liabilities of Massachusetts Series assumed by National Municipals
         Fund pursuant to the Reorganization, plus the liabilities, if any, to
         which assets transferred pursuant to the Reorganization will be
         subject, constitute less than 20% of the total consideration for the
         Reorganization, all such liabilities will have been incurred by



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Massachusetts Series)
Page 3

         Massachusetts Series in the ordinary course of its business, and
         National Municipals Fund will pay no other consideration, except for
         the Shares, in connection with the Reorganization.

5.       All expenses incurred by Massachusetts Series with respect to the
         Reorganization will be borne by Massachusetts Series. Each shareholder
         of Massachusetts Series will pay its respective share of the expenses,
         if any, incurred in connection with the Reorganization. National
         Municipals Fund will pay the expenses, if any, incurred by it in
         connection with the Reorganization.

6.       No intercorporate indebtedness will exist between National Municipals
         Fund and Massachusetts Series that was issued, acquired, or will be
         settled at a discount.

7.       Massachusetts Series will not own, directly or indirectly, nor will it
         have owned during the five years preceding the Closing Date, directly
         or indirectly, any stock of National Municipals Fund.

8.       The assets of Massachusetts Series transferred to National Municipals
         Fund will include all assets owned by Massachusetts Series at fair
         market value on the Closing Date subject to all known liabilities of
         Massachusetts Series at such time.

9.       In accordance with the terms of the Agreement, Massachusetts Series
         will transfer all of its business and will transfer assets to National
         Municipals Fund representing at least 90% of the fair market value of
         the net assets, and at least 70% of the fair market value of the gross
         assets, held by Massachusetts Series immediately prior to the
         Reorganization.  For purposes of this assumption, amounts paid by
         Massachusetts Series to shareholders who receive cash or other
         property, amounts paid to dissenters, amounts used by Massachusetts
         Series to pay its reorganization expenses and all redemptions and
         distributions (other than regular, normal redemptions and dividends)
         made by Massachusetts Series immediately preceding the Reorganization
         will be included as assets of Massachusetts Series held immediately
         prior to the Reorganization.

10.      The fair market value of the assets of Massachusetts Series transferred
         to National Municipals Fund will equal or exceed the sum of liabilities
         assumed by National Municipals Fund, plus the amount of liabilities, if
         any, to which the transferred assets will be subject.



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Massachusetts Series)
Page 4

11.      Massachusetts Series will not be under the jurisdiction of a court in
         a Title 11 or similar case within the meaning of Section 368(a)(3)(A)
         of the Internal Revenue Code of 1986, as amended (the "Code").

12.      No cash will be paid to the shareholders of Massachusetts Series in
         lieu of fractional Shares.

13.      For federal income tax purposes, Massachusetts Series will qualify as a
         "regulated investment company" (as defined in Code Section 851) and
         will have so qualified since its formation. The provisions of Code
         Sections 851 through 855 apply to Massachusetts Series and will
         continue to apply through the Closing Date.

14.      As of the Closing Date, Massachusetts Series will have declared to its
         shareholders of record a dividend or dividends payable prior to
         closing, which together with all previous such dividends will have the
         effect of distributing all of Massachusetts Series' investment company
         taxable income plus the excess of its interest income, if any,
         excludable from gross income under Code Section 103(a) (including by
         virtue of prior Code Section 853(b)(5)(C)) over its deductions
         disallowed under Code Sections 265 and 171(a)(2) for the taxable year
         of Massachusetts Series ending on the Closing Date and all its net
         capital gain realized in such taxable year.

15.      Neither National Municipals Fund nor any person related thereto within
         the meaning of Treasury Regulation Section 1.368-1(e) will have any
         plan or intention to reacquire any of the Shares of National Municipals
         Fund issued in the Reorganization. For purposes of this assumption,
         Shares of National Municipals Fund required to be redeemed by National
         Municipals Fund not as part of the Reorganization but in the ordinary
         course of its business as an open-end investment company pursuant to
         Section 22(e) of the ICA shall not be taken into account.

16.      Following the Reorganization, National Municipals Fund will continue
         the historic business of Massachusetts Series or use a significant
         portion of Massachusetts Series' historic business assets in its
         business.

17.      National Municipals Fund will not own, directly or indirectly, nor will
         it have owned during the five years preceding the Closing Date,
         directly or indirectly, any shares of beneficial interest of
         Massachusetts Series.

18.      National Municipals Fund will not be under the jurisdiction of a court
         in a Title 11 or similar case within the meaning of Code Section
         368(a)(3)(A).



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Massachusetts Series)
Page 5

19.      For federal income tax purposes, National Municipals Fund will qualify
         as a "regulated investment company" (as defined in Code Section 851)
         and will have so qualified since its formation. The provisions of Code
         Sections 851 through 855 apply to National Municipals Fund prior to the
         Reorganization and will continue to apply after the Closing Date.

20.      No compensation received by any shareholder-employee of Massachusetts
         Series will be separate consideration for the Reorganization; none of
         the Shares of National Municipals Fund received by any
         shareholder-employee will be separate consideration for, or allocable
         to, any employment agreement; and any compensation paid to any
         shareholder-employee will be for services actually rendered and will be
         commensurate with amounts paid to other parties bargaining at arm's
         length for similar services.

         We note that our opinion is expressly limited to the federal laws of
the United States.

         Based on the foregoing and subject to the assumptions and limitations
set forth above and such examination of law as we have deemed necessary, we are
of the opinion that:

         1.       The acquisition by National Municipals Fund of the assets of
                  Massachusetts Series in exchange solely for voting shares of
                  National Municipals Fund and the assumption by National
                  Municipals Fund of such Series' liabilities, if any,
                  followed by the distribution of National Municipals Fund's
                  voting shares received by Massachusetts Series pro rata to
                  such Series' shareholders, pursuant to its termination and
                  constructively in exchange for such Series' shares, will
                  constitute a "reorganization" within the meaning of Code
                  Section 368(a)(1)(C), and each of National Municipals Fund
                  and Massachusetts Series will be "a party to a reorganization"
                  within the meaning of Code Section 368(b);

         2.       Massachusetts Series' shareholders will not recognize gain or
                  loss upon the constructive exchange of all of their shares of
                  Massachusetts Series solely for shares of National Municipals
                  Fund in complete termination of Massachusetts Series, as
                  described above and in the Agreement;

         3.       No gain or loss will be recognized by Massachusetts Series
                  upon the transfer of its assets to National Municipals Fund in
                  exchange solely for the Shares and the assumption by National
                  Municipals Fund of Massachusetts Series' liabilities, if any,
                  and the subsequent distribution of the Shares to Massachusetts
                  Series' shareholders in complete termination of Massachusetts
                  Series;



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Massachusetts Series)
Page 6

         4.       No gain or loss will be recognized by National Municipals Fund
                  upon the acquisition of Massachusetts Series' assets in
                  exchange solely for the Shares and the assumption of
                  Massachusetts Series' liabilities, if any;

         5.       National Municipals Fund's basis for the assets of
                  Massachusetts Series acquired in the Reorganization will be
                  the same as the basis of these assets when held by
                  Massachusetts Series immediately before the transfer, and the
                  holding period of such assets acquired by National Municipals
                  Fund will include the holding period of these assets when held
                  by Massachusetts Series;

         6.       The Massachusetts Series shareholders' basis for the Shares to
                  be received by them pursuant to the Reorganization will be the
                  same as their basis for the shares of Massachusetts Series to
                  be constructively surrendered in exchange therefor; and

         7.       The holding period of the Shares to be received by
                  Massachusetts Series' shareholders will include the period
                  during which the shares of Massachusetts Series to be
                  constructively surrendered in exchange therefor were held;
                  provided that Massachusetts Series' shares surrendered were
                  held as capital assets by those shareholders as defined in
                  Code Section 1221, on the date of the exchange.

         The opinions expressed herein are based upon currently applicable
statutes and regulations and existing judicial and administrative
interpretations. We can provide no assurance that such statutes or regulations,
or existing judicial or administrative interpretations thereof, will not be
amended, revoked or modified (possibly prior to the Closing Date) in a manner
which would affect any of our conclusions. Finally, we note that this opinion is
solely for the benefit of the addressees hereof in connection with the
transaction described herein and, except as otherwise provided herein, should
not be referred to, used, relied upon or quoted (with or without specific
reference to our firm) in any documents, reports, financial statements or
otherwise, without our prior written consent.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name and reference to our firm in
the Registration Statement or in the Prospectus constituting part thereof. In
giving such consent, we do not thereby admit that we are in the category of
persons whose consent is required under Section 7 of the Securities Act or the
rules and regulations of the Commission thereunder.

                                        Very truly yours,

                                       /s/ Swidler Berlin Shereff Friedman, LLP
                                       Swidler Berlin Shereff Friedman, LLP

SBSF:JHN:MKN:RDB:CSB



              SWIDLER BERLIN SHEREFF FRIEDMAN, LLP
                     THE CHRYSLER BUILDING                WASHINGTON, DC OFFICE
                     405 LEXINGTON AVENUE                THE WASHINGTON HARBOUR
                      NEW YORK, NY 10174           3000 K STREET, NW, SUITE 300
                   TELEPHONE (212) 973-0111                WASHINGTON, DC 20007
                      FAX (212) 758-9526      (202) 424-7500 FAX (202) 424-7647
                       WWW.SWIDLAW.COM


                                                               November 1, 2000


Prudential National Municipals Fund, Inc.
Gateway Center Three
Newark, New Jersey 07102

Prudential Municipal Series Fund
(North Carolina Series)
Gateway Center Three
Newark, New Jersey 07102

Dear Sirs:

         We are acting as counsel to Prudential National Municipals Fund, Inc.,
a Maryland corporation ("National Municipals Fund") and Prudential Municipal
Series Fund, a Massachusetts business trust ("Series Fund") in connection with
the proposed transfer of the assets of the North Carolina Series ("North
Carolina Series") of Series Fund to the National Municipals Fund solely in
exchange for Class A shares of the National Municipals Fund (the "Shares"), and
the assumption by National Municipals Fund of North Carolina Series'
liabilities, if any, pursuant to an Agreement and Plan of Reorganizations (the
"Agreement"). The transactions contemplated by the Agreement are collectively
referred to herein as the "Reorganization."

         We have participated in the preparation of the National Municipals
Fund's Registration Statement on Form N-14 (the "Registration Statement")
relating, among other things, to the Shares of National Municipals Fund to be
offered in exchange for the assets and the assumption of the liabilities of
North Carolina Series, and containing the Prospectus and Proxy Statement
relating to the Reorganization (collectively, the "Prospectus"), to be filed
with the Securities and Exchange Commission (the "Commission") pursuant to the
provisions of the Securities Act of 1933, as amended (the "Securities Act"), and
the rules and regulations of the Commission thereunder. In addition, in
connection with rendering the opinions expressed herein, we have examined
originals or copies, certified or otherwise identified to our satisfaction, of
such other



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(North Carolina Series)
Page 2

documents, records and instruments as we have deemed necessary or appropriate
for the purpose of rendering this opinion, including the form of the Agreement
included as Attachment A to the Prospectus.

         In our examination of the foregoing documents we have assumed the
genuineness of all signatures, the authority of each signatory, the due
execution and delivery of all documents by all parties, the authenticity of all
agreements, documents, certificates and instruments submitted to us as
originals, the conformity of the Agreement as executed and delivered by the
parties with the form of the Agreement contained in the Prospectus, and the
conformity with originals of all agreements, documents, certificates and
instruments submitted to us as copies.

         In rendering the opinions expressed herein, we have assumed that the
transactions contemplated by the Agreement will be consummated in accordance
therewith and as described in the Prospectus. As to other questions of fact
material to this opinion, we have assumed, with your approval and without
independent investigation or verification, that the following facts will be
accurate and complete as of the consummation of the Reorganization (the "Closing
Date").

1.       The fair market value of the Shares to be received by each North
         Carolina Series shareholder will be equal to the fair market value of
         the shares of beneficial interest of North Carolina Series surrendered
         in exchange therefor upon the liquidation of North Carolina Series.

2.       There will be no plan or intention by North Carolina Series to redeem
         its shares prior or incident to and as part of the Reorganization. For
         purposes of this assumption, shares of North Carolina Series required
         to be redeemed by North Carolina Series prior to the Reorganization and
         not as part of the Reorganization but in the ordinary course of its
         business as an open-end investment company pursuant to Section 22(e) of
         the Investment Company Act of 1940, as amended (the "ICA"), shall not
         be taken into account.

3.       Pursuant to the Agreement, Series Fund will distribute in complete
         liquidation of North Carolina Series, the Shares of National Municipals
         Fund received by North Carolina Series in the Reorganization.

4.       The liabilities of North Carolina Series assumed by National Municipals
         Fund pursuant to the Reorganization, plus the liabilities, if any, to
         which assets transferred pursuant to the Reorganization will be
         subject, constitute less than 20% of the total consideration for the
         Reorganization, all such liabilities will have been incurred by North
         Carolina Series in the ordinary course of its business, and National
         Municipals Fund will



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(North Carolina Series)
Page 3

         pay no other consideration, except for the Shares, in connection with
         the Reorganization.

5.       All expenses incurred by North Carolina Series with respect to the
         Reorganization will be borne by North Carolina Series. Each shareholder
         of North Carolina Series will pay its respective share of the expenses,
         if any, incurred in connection with the Reorganization. National
         Municipals Fund will pay the expenses, if any, incurred by it in
         connection with the Reorganization.

6.       No intercorporate indebtedness will exist between National Municipals
         Fund and North Carolina Series that was issued, acquired, or will be
         settled at a discount.

7.       North Carolina Series will not own, directly or indirectly, nor will it
         have owned during the five years preceding the Closing Date, directly
         or indirectly, any stock of National Municipals Fund.

8.       The assets of North Carolina Series transferred to National Municipals
         Fund will include all assets owned by North Carolina Series at fair
         market value on the Closing Date subject to all known liabilities of
         North Carolina Series at such time.

9.       In accordance with the terms of the Agreement, North Carolina Series
         will transfer all of its business and will transfer assets to National
         Municipals Fund representing at least 90% of the fair market value of
         the net assets, and at least 70% of the fair market value of the gross
         assets, held by North Carolina Series immediately prior to the
         Reorganization.  For purposes of this assumption, amounts paid by North
         Carolina Series to shareholders who receive cash or other property,
         amounts paid to dissenters, amounts used by North Carolina Series to
         pay its reorganization expenses and all redemptions and distributions
         (other than regular, normal redemptions and dividends) made by North
         Carolina Series immediately preceding the Reorganization will be
         included as assets of North Carolina Series held immediately prior to
         the Reorganization.

10.      The fair market value of the assets of North Carolina Series
         transferred to National Municipals Fund will equal or exceed the sum of
         liabilities assumed by National Municipals Fund, plus the amount of
         liabilities, if any, to which the transferred assets will be subject.

11.      North Carolina Series will not be under the jurisdiction of a court in
         a Title 11 or similar case within the meaning of Section 368(a)(3)(A)
         of the Internal Revenue Code of 1986, as amended (the "Code").



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(North Carolina Series)
Page 4


12.      No cash will be paid to the shareholders of North Carolina Series in
         lieu of fractional Shares.

13.      For federal income tax purposes, North Carolina Series will qualify as
         a "regulated investment company" (as defined in Code Section 851) and
         will have so qualified since its formation. The provisions of Code
         Sections 851 through 855 apply to North Carolina Series and will
         continue to apply through the Closing Date.

14.      As of the Closing Date, North Carolina Series will have declared to
         its shareholders of record a dividend or dividends payable prior to
         closing, which together with all previous such dividends will have
         the effect of distributing all of North Carolina Series' investment
         company taxable income plus the excess of its interest income, if any,
         excludable from gross income under Code Section 103(a) (including by
         virtue of prior Code Section 853(b)(5)(C)) over its deductions
         disallowed under Code Sections 265 and 171(a)(2) for the taxable year
         of North Carolina Series ending on the Closing Date and all its net
         capital gain realized in such taxable year.

15.      Neither National Municipals Fund nor any person related thereto within
         the meaning of Treasury Regulation Section 1.368-1(e) will have any
         plan or intention to reacquire any of the Shares of National Municipals
         Fund issued in the Reorganization. For purposes of this assumption,
         Shares of National Municipals Fund required to be redeemed by National
         Municipals Fund not as part of the Reorganization but in the ordinary
         course of its business as an open-end investment company pursuant to
         Section 22(e) of the ICA shall not be taken into account.

16.      Following the Reorganization, National Municipals Fund will continue
         the historic business of North Carolina Series or use a significant
         portion of North Carolina Series' historic business assets in its
         business.

17.      National Municipals Fund will not own, directly or indirectly, nor will
         it have owned during the five years preceding the Closing Date,
         directly or indirectly, any shares of beneficial interest of North
         Carolina Series.

18.      National Municipals Fund will not be under the jurisdiction of a court
         in a Title 11 or similar case within the meaning of Code Section
         368(a)(3)(A).




Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(North Carolina Series)
Page 5

19.      For federal income tax purposes, National Municipals Fund will qualify
         as a regulated investment company (as defined in Code Section 851) and
         will have so qualified since its formation. The provisions of Code
         Sections 851 through 855 apply to National Municipals Fund prior to the
         Reorganization and will continue to apply after the Closing Date.

20.      No compensation received by any shareholder-employee of North Carolina
         Series will be separate consideration for the Reorganization; none of
         the Shares of National Municipals Fund received by any
         shareholder-employee will be separate consideration for, or allocable
         to, any employment agreement; and any compensation paid to any
         shareholder-employee will be for services actually rendered and will be
         commensurate with amounts paid to other parties bargaining at arm's
         length for similar services.

         We note that our opinion is expressly limited to the federal laws of
the United States.

         Based on the foregoing and subject to the assumptions and limitations
set forth above and such examination of law as we have deemed necessary, we are
of the opinion that:

         1.       The acquisition by National Municipals Fund of the assets of
                  North Carolina Series in exchange solely for voting shares of
                  National Municipals Fund and the assumption by National
                  Municipals Fund of such Series' liabilities, if any, followed
                  by the distribution of National Municipals Fund's voting
                  shares received by North Carolina Series pro rata to such
                  Series' shareholders, pursuant to its termination and
                  constructively in exchange for such Series' shares, will
                  constitute a "reorganization" within the meaning of Code
                  Section 368(a)(1)(C), and each of National Municipals Fund
                  and North Carolina Series will be "a party to a
                  reorganization" within the meaning of Code Section 368(b);

         2.       North Carolina Series' shareholders will not recognize gain or
                  loss upon the constructive exchange of all of their shares of
                  North Carolina Series solely for shares of National Municipals
                  Fund in complete termination of North Carolina Series, as
                  described above and in the Agreement;

         3.       No gain or loss will be recognized by North Carolina Series
                  upon the transfer of its assets to National Municipals Fund in
                  exchange solely for the Shares and the assumption by National
                  Municipals Fund of North Carolina Series' liabilities, if any,
                  and the subsequent distribution of the Shares to North
                  Carolina Series' shareholders in complete termination of North
                  Carolina Series;



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(North Carolina Series)
Page 6

         4.       No gain or loss will be recognized by National Municipals Fund
                  upon the acquisition of North Carolina Series' assets in
                  exchange solely for the Shares and the assumption of North
                  Carolina Series' liabilities, if any;

         5.       National Municipals Fund's basis for the assets of North
                  Carolina Series acquired in the Reorganization will be the
                  same as the basis of these assets when held by North Carolina
                  Series immediately before the transfer, and the holding period
                  of such assets acquired by National Municipals Fund will
                  include the holding period of these assets when held by North
                  Carolina Series;

         6.       The North Carolina Series shareholders' basis for the Shares
                  to be received by them pursuant to the Reorganization will be
                  the same as their basis for the shares of North Carolina
                  Series to be constructively surrendered in exchange therefor;
                  and

         7.       The holding period of the Shares to be received by North
                  Carolina Series' shareholders will include the period during
                  which the shares of North Carolina Series to be constructively
                  surrendered in exchange therefor were held; provided that
                  North Carolina Series' shares surrendered were held as capital
                  assets by those shareholders as defined in Code Section 1221,
                  on the date of the exchange.

         The opinions expressed herein are based upon currently applicable
statutes and regulations and existing judicial and administrative
interpretations. We can provide no assurance that such statutes or regulations,
or existing judicial or administrative interpretations thereof, will not be
amended, revoked or modified (possibly prior to the Closing Date) in a manner
which would affect any of our conclusions. Finally, we note that this opinion is
solely for the benefit of the addressees hereof in connection with the
transaction described herein and, except as otherwise provided herein, should
not be referred to, used, relied upon or quoted (with or without specific
reference to our firm) in any documents, reports, financial statements or
otherwise, without our prior written consent.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name and reference to our firm in
the Registration Statement or in the Prospectus constituting part thereof. In
giving such consent, we do not thereby admit that we are in the category of
persons whose consent is required under Section 7 of the Securities Act or the
rules and regulations of the Commission thereunder.

                                       Very truly yours,
                                       /s/ Swidler Berlin Shereff Friedman, LLP
                                       Swidler Berlin Shereff Friedman, LLP

SBSF:JHN:MKN:RDB:CSB



              SWIDLER BERLIN SHEREFF FRIEDMAN, LLP
                     THE CHRYSLER BUILDING                WASHINGTON, DC OFFICE
                     405 LEXINGTON AVENUE                THE WASHINGTON HARBOUR
                      NEW YORK, NY 10174           3000 K STREET, NW, SUITE 300
                   TELEPHONE (212) 973-0111                WASHINGTON, DC 20007
                      FAX (212) 758-9526      (202) 424-7500 FAX (202) 424-7647
                       WWW.SWIDLAW.COM


                                                               November 1, 2000


Prudential National Municipals Fund, Inc.
Gateway Center Three
Newark, New Jersey 07102

Prudential Municipal Series Fund
(Ohio Series)
Gateway Center Three
Newark, New Jersey 07102

Dear Sirs:

         We are acting as counsel to Prudential National Municipals Fund, Inc.,
a Maryland corporation ("National Municipals Fund") and Prudential Municipal
Series Fund, a Massachusetts business trust ("Series Fund") in connection with
the proposed transfer of the assets of the Ohio Series ("Ohio Series") of Series
Fund to the National Municipals Fund in exchange solely for Class A shares of
the National Municipals Fund (the "Shares"), and the assumption by National
Municipals Fund of Ohio Series' liabilities, if any, pursuant to an Agreement
and Plan of Reorganizations (the "Agreement"). The transactions contemplated by
the Agreement are collectively referred to herein as the "Reorganization."

         We have participated in the preparation of the National Municipals
Fund's Registration Statement on Form N-14 (the "Registration Statement")
relating, among other things, to the Shares of National Municipals Fund to be
offered in exchange for the assets and the assumption of the liabilities of Ohio
Series, and containing the Prospectus and Proxy Statement relating to the
Reorganization (collectively, the "Prospectus"), to be filed with the Securities
and Exchange Commission (the "Commission") pursuant to the provisions of the
Securities Act of 1933, as amended (the "Securities Act"), and the rules and
regulations of the Commission thereunder. In addition, in connection with
rendering the opinions expressed herein, we have examined originals or copies,
certified or otherwise identified to our satisfaction, of such other documents,
records and instruments as we have deemed necessary or appropriate for the
purpose of rendering



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Ohio Series)
Page 2

this opinion, including the form of the Agreement included as Attachment A to
the Prospectus.

         In our examination of the foregoing documents we have assumed the
genuineness of all signatures, the authority of each signatory, the due
execution and delivery of all documents by all parties, the authenticity of all
agreements, documents, certificates and instruments submitted to us as
originals, the conformity of the Agreement as executed and delivered by the
parties with the form of the Agreement contained in the Prospectus, and the
conformity with originals of all agreements, documents, certificates and
instruments submitted to us as copies.

         In rendering the opinions expressed herein, we have assumed that the
transactions contemplated by the Agreement will be consummated in accordance
therewith and as described in the Prospectus. As to other questions of fact
material to this opinion, we have assumed, with your approval and without
independent investigation or verification, that the following facts will be
accurate and complete as of the consummation of the Reorganization (the "Closing
Date").

1.       The fair market value of the Shares to be received by each Ohio Series
         shareholder will be equal to the fair market value of the shares of
         beneficial interest of Ohio Series surrendered in exchange therefor
         upon the liquidation of Ohio Series.

2.       There will be no plan or intention by Ohio Series to redeem its shares
         prior or incident to and as part of the Reorganization. For purposes of
         this assumption, shares of Ohio Series required to be redeemed by Ohio
         Series prior to the Reorganization and not as part of the
         Reorganization but in the ordinary course of its business as an
         open-end investment company pursuant to Section 22(e) of the Investment
         Company Act of 1940, as amended (the "ICA"), shall not be taken into
         account.

3.       Pursuant to the Agreement, Series Fund will distribute in complete
         liquidation of Ohio Series, the Shares of National Municipals Fund
         received by Ohio Series in the Reorganization.

4.       The liabilities of Ohio Series assumed by National Municipals Fund
         pursuant to the Reorganization, plus the liabilities, if any, to which
         assets transferred pursuant to the Reorganization will be subject,
         constitute less than 20% of the total consideration for the
         Reorganization, all such liabilities will have been incurred by Ohio
         Series in the ordinary course of its business, and National Municipals
         Fund will pay no other consideration, except for the Shares, in
         connection with the Reorganization.



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Ohio Series)
Page 3

5.       All expenses incurred by Ohio Series with respect to the Reorganization
         will be borne by Ohio Series. Each shareholder of Ohio Series will pay
         its respective share of the expenses, if any, incurred in connection
         with the Reorganization. National Municipals Fund will pay the
         expenses, if any, incurred by it in connection with the Reorganization.

6.       No intercorporate indebtedness will exist between National Municipals
         Fund and Ohio Series that was issued, acquired, or will be settled at a
         discount.

7.       Ohio Series will not own, directly or indirectly, nor will it have
         owned during the five years preceding the Closing Date, directly or
         indirectly, any stock of National Municipals Fund.

8.       The assets of Ohio Series transferred to National Municipals Fund will
         include all assets owned by Ohio Series at fair market value on the
         Closing Date subject to all known liabilities of Ohio Series at such
         time.

9.       In accordance with the terms of the Agreement, Ohio Series will
         transfer all of its business and will transfer assets to National
         Municipals Fund representing at least 90% of the fair market value of
         the net assets, and at least 70% of the fair market value of the gross
         assets, held by Ohio Series immediately prior to the Reorganization.
         For purposes of this assumption, amounts paid by Ohio Series to
         shareholders who receive cash or other property, amounts paid to
         dissenters, amounts used by Ohio Series to pay its reorganization
         expenses and all redemptions and distributions (other than regular,
         normal redemptions and dividends) made by Ohio Series immediately
         preceding the Reorganization will be included as assets of Ohio Series
         held immediately prior to the Reorganization.

10.      The fair market value of the assets of Ohio Series transferred to
         National Municipals Fund will equal or exceed the sum of liabilities
         assumed by National Municipals Fund, plus the amount of liabilities, if
         any, to which the transferred assets will be subject.

11.      Ohio Series will not be under the jurisdiction of a court in a Title 11
         or similar case within the meaning of Section 368(a)(3)(A) of the
         Internal Revenue Code of 1986, as amended (the "Code").

12.      No cash will be paid to the shareholders of Ohio Series in lieu of
         fractional Shares.



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Ohio Series)
Page 4

13.      For federal income tax purposes, Ohio Series will qualify as a
         regulated investment company (as defined in Code Section 851) and will
         have so qualified since its formation. The provisions of Code Sections
         851 through 855 apply to Ohio Series and will continue to apply through
         the Closing Date.

14.      As of the Closing Date, Ohio Series will have declared to its
         shareholders of record a dividend or dividends payable prior to
         closing, which together with all previous such dividends will have
         the effect of distributing all of Ohio Series' investment company
         taxable income plus the excess of its interest income, if any,
         excludable from gross income under Code Section 103(a) (including by
         virtue of prior Code Section 853(b)(5)(C)) over its deductions
         disallowed under Code Sections 265 and 171(a)(2) for the taxable year
         of Ohio Series ending on the Closing Date and all its net capital gain
         realized in such taxable year.

15.      Neither National Municipals Fund nor any person related thereto within
         the meaning of Treasury Regulation Section 1.368-1(e) will have any
         plan or intention to reacquire any of the Shares of National Municipals
         Fund issued in the Reorganization. For purposes of this assumption,
         Shares of National Municipals Fund required to be redeemed by National
         Municipals Fund not as part of the Reorganization but in the ordinary
         course of its business as an open-end investment company pursuant to
         Section 22(e) of the ICA shall not be taken into account.

16.      Following the Reorganization, National Municipals Fund will continue
         the historic business of Ohio Series or use a significant portion of
         Ohio Series' historic business assets in its business.

17.      National Municipals Fund will not own, directly or indirectly, nor will
         it have owned during the five years preceding the Closing Date,
         directly or indirectly, any shares of beneficial interest of Ohio
         Series.

18.      National Municipals Fund will not be under the jurisdiction of a court
         in a Title 11 or similar case within the meaning of Code Section
         368(a)(3)(A).

19.      For federal income tax purposes, National Municipals Fund will qualify
         as a "regulated investment company" (as defined in Code Section 851)
         and will have so qualified since its formation. The provisions of Code
         Sections 851 through 855 apply to National Municipals Fund prior to
         the Reorganization and will continue to apply after the Closing Date.



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Ohio Series)
Page 5

20.      No compensation received by any shareholder-employee of Ohio Series
         will be separate consideration for the Reorganization; none of the
         Shares of National Municipals Fund received by any shareholder-employee
         will be separate consideration for, or allocable to, any employment
         agreement; and any compensation paid to any shareholder- employee will
         be for services actually rendered and will be commensurate with amounts
         paid to other parties bargaining at arm's length for similar services.

         We note that our opinion is expressly limited to the federal laws of
the United States.

         Based on the foregoing and subject to the assumptions and limitations
set forth above and such examination of law as we have deemed necessary, we are
of the opinion that:

         1.       The acquisition by National Municipals Fund of the assets of
                  Ohio Series in exchange solely for voting shares of National
                  Municipals Fund and the assumption by National Municipals Fund
                  of such Series' liabilities, if any, followed by the
                  distribution of National Municipals Fund's voting shares
                  received by Ohio Series pro rata to such Series' shareholders,
                  pursuant to its termination and constructively in exchange for
                  such Series' shares, will constitute a "reorganization" within
                  the meaning of Code Section 368(a)(1)(C), and each of National
                  Municipals Fund and Ohio Series will be "a party to a
                  reorganization" within the meaning of Code Section 368(b);

         2.       Ohio Series' shareholders will not recognize gain or loss upon
                  the constructive exchange of all of their shares of Ohio
                  Series solely for shares of National Municipals Fund in
                  complete termination of Ohio Series, as described above and in
                  the Agreement;

         3.       No gain or loss will be recognized by Ohio Series upon the
                  transfer of its assets to National Municipals Fund in exchange
                  solely for the Shares and the assumption by National
                  Municipals Fund of Ohio Series' liabilities, if any, and the
                  subsequent distribution of the Shares to Ohio Series'
                  shareholders in complete termination of Ohio Series;



Prudential National Municipals Fund, Inc.
Prudential Municipal Series Fund
(Ohio Series)
Page 6

         4.       No gain or loss will be recognized by National Municipals Fund
                  upon the acquisition of Ohio Series' assets in exchange solely
                  for the Shares and the assumption of Ohio Series' liabilities,
                  if any;

         5.       National Municipals Fund's basis for the assets of Ohio Series
                  acquired in the Reorganization will be the same as the basis
                  of these assets when held by Ohio Series immediately before
                  the transfer, and the holding period of such assets acquired
                  by National Municipals Fund will include the holding period of
                  these assets when held by Ohio Series;

         6.       The Ohio Series shareholders' basis for the Shares to be
                  received by them pursuant to the Reorganization will be the
                  same as their basis for the shares of Ohio Series to be
                  constructively surrendered in exchange therefor; and

         7.       The holding period of the Shares to be received by Ohio
                  Series' shareholders will include the period during which the
                  shares of Ohio Series to be constructively surrendered in
                  exchange therefor were held; provided that Ohio Series' shares
                  surrendered were held as capital assets by those shareholders
                  as defined in Code Section 1221, on the date of the exchange.

         The opinions expressed herein are based upon currently applicable
statutes and regulations and existing judicial and administrative
interpretations. We can provide no assurance that such statutes or regulations,
or existing judicial or administrative interpretations thereof, will not be
amended, revoked or modified (possibly prior to the Closing Date) in a manner
which would affect any of our conclusions. Finally, we note that this opinion is
solely for the benefit of the addressees hereof in connection with the
transaction described herein and, except as otherwise provided herein, should
not be referred to, used, relied upon or quoted (with or without specific
reference to our firm) in any documents, reports, financial statements or
otherwise, without our prior written consent.

         We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name and reference to our firm in
the Registration Statement or in the Prospectus constituting part thereof. In
giving such consent, we do not thereby admit that we are in the category of
persons whose consent is required under Section 7 of the Securities Act or the
rules and regulations of the Commission thereunder.

                                      Very truly yours,
                                      /s/ Swidler Berlin Shereff Friedman, LLP
                                      Swidler Berlin Shereff Friedman, LLP

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