What is the [A2-] (in mol L-1) of a solution containing 1.101 mol L-1 of a diprotic acid with pKA1 = 3.43 and pKA2 = 8.3

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answerhappygod
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What is the [A2-] (in mol L-1) of a solution containing 1.101 mol L-1 of a diprotic acid with pKA1 = 3.43 and pKA2 = 8.3

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What is the [A2-] (in molL-1) of a solution containing 1.101 molL-1 of a diprotic acid with pKA1 =3.43 and pKA2 = 8.36 ?
H2A + H2O ⇌H3O+ + HA- pkA1
HA- + H2O ⇌H3O+ + A2- pkA2
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