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9. Polyprotic Acid-Base Equilibria - Part 1 of 2

9. Polyprotic Acid-Base Equilibria / Diprotic Buffers / Problem 7

Problem 7

Given a diprotic buffer system with H₂A (0.1 M) and HA^- (0.05 M), and pK_a1 = 4.5, what is the pH of the solution?

A

4.2

B

4.2

C

4.8

D

4.2