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# What is the pH of a solution containing 0.831 mol L-1 of a diprotic acid with...

What is the pH of a solution containing 0.831 mol L-1 of a diprotic acid with pKA1 = 4.62 and pKA2 = 8.62 ?

H2A + H2O ⇌ H3O+ + HA- pkA1

HA- + H2O ⇌ H3O+ + A2- pkA2

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