1). Phosphoric acid (H3PO4) is a triprotic acid. Which of the following equilibriums will have the
LARGEST equilibrium constant?
a). H3PO4 + H2O <=> H3O+ + H2PO4
b). H2PO4 + H2O <=> H3O+ + HPO42-
c). HPO 2 + H2O <=> H2O + PO 3-

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