Question

a buffer solution is made by dissolving H3PO4 and NAH2PO4​

Answer 1

Explanation:

H3PO4 ==> H^+ + H2PO4^2-

H2PO4^2- + H^+(small amount acid) = H3PO4.

Adding NaOH, it neutralizes by

H3PO4 + NaOH ==> NaH2PO4 + H2O OR

H3PO4 + OH^- ==> H2O + H2PO4^-

HOPE IT HELPS