Phosphoric acid, H3PO4, establishes the following equilibria in aqueous solution. H3PO4(aq) + H2O(l) — Acids and Bases Chemistry Question
Question
Phosphoric acid, H3PO4, establishes the following equilibria in aqueous solution.
H3PO4(aq) + H2O(l) ⇌ H3O+(aq) + H2PO4–(aq) K1
H2PO4–(aq) + H2O(l) ⇌ H3O+(aq) + HPO42–(aq) K2
HPO42–(aq) + H2O(l) ⇌ H3O+(aq) + PO43–(aq) K3
What is the relationship among the K values?
A.
K1 = K2 = K3
B.
K1 > K2 = K3
C.✓ Correct
K1 > K2 > K3
D.
K1 < K2 < K3
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