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Diprotic Buffers

9. Polyprotic Acid-Base Equilibria / Diprotic Buffers / Problem 2

Problem 2

Calculate the pH of a buffer solution containing 0.1 M HSO₃^- and 0.05 M SO₃^2- with pK_a2 = 7.2.

A

7.2

B

7.5

C

6.9

D

6.5