Which of the Following Equations Represents the Behavior of H₂PO₄^-

Multiple Choice

Which of the following equations represents the behavior of H₂PO₄^- as an acid?

A) H₂PO₄^-(aq) + H₃O⁺(aq) ⇌ H₃PO₄(aq) + H₂O(l)
B) H₂PO₄^-(aq) + HF(aq) ⇌ H₃PO₄(aq) + F^-(aq)
C) H₂PO₄^-(aq) + HCN(aq) ⇌ H₃PO₄(aq) + CN^-(aq)
D) H₂PO₄^-(aq) + OH^-(aq) ⇌ HPO₄^-(aq) + H₂O(l)
E) H₂PO₄^-(aq) + H₂O(l) ⇌ H₃PO₄(aq) + OH^-(aq)