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For the Polyprotic Acid H3A,which of the Equilibria Below Is

Question 2

Multiple Choice

For the polyprotic acid H3A,which of the equilibria below is INCORRECT?


A) A3− ⇋ HA2− + OH− Kb3 = Kw/Ka3
B) H2A− ⇋ HA2− + H+ Ka2 = K2
C) HA2− ⇋ A3− + H+ Ka3 = K3
D) H3A ⇋ H2A− + H+ Ka1 = K1
E) HA2− ⇋ H2A− + OH− Kb2 = Kw/Ka2

Correct Answer:

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