The dihydrogenphosphate ion, H2PO4 - is amphiprotic. In which of the following reactions is this ion serving as a base?

H3O + (aq) + H2PO4 - (aq) ⇌ H3PO4 (aq) + H2O (l)

H3O + (aq) + HPO42 - (aq) ⇌ H2PO4 - (aq) + H2O (l)

H3PO4 (aq) + HPO42 - (aq) ⇌ 2 H2PO4 - (aq)

Question

Cheyanne

Chemistry

12 May, 07:26

The dihydrogenphosphate ion, H2PO4 - is amphiprotic. In which of the following reactions is this ion serving as a base?

H3O + (aq) + H2PO4 - (aq) ⇌ H3PO4 (aq) + H2O (l)

H3O + (aq) + HPO42 - (aq) ⇌ H2PO4 - (aq) + H2O (l)

H3PO4 (aq) + HPO42 - (aq) ⇌ 2 H2PO4 - (aq)

+2

Answers (1)

Know the Answer?

Brett Green · Answer 1

H3PO4 (aq) + HPO42 - (aq) ⇄ 2H2PO4-

Explanation:

In the reaction of Phosphonic acid, H3PO4 one proton H + is removed to form dihydrogen phosphate ion, H2PO4-, which is a base.

The dihydrogenphosphate ion, H2PO4 - is amphiprotic. In which of the following reactions is this ion serving as a base?H3O + (aq) + H2PO4 - (aq) ⇌ H3PO4 (aq) + H2O (l)H3O + (aq) + HPO42 - (aq) ⇌ H2PO4 - (aq) + H2O (l)H3PO4 (aq) + HPO42 - (aq) ⇌ 2 H2PO4 - (aq)

The dihydrogenphosphate ion, H2PO4 - is amphiprotic. In which of the following reactions is this ion serving as a base?

H3O + (aq) + H2PO4 - (aq) ⇌ H3PO4 (aq) + H2O (l)

H3O + (aq) + HPO42 - (aq) ⇌ H2PO4 - (aq) + H2O (l)

H3PO4 (aq) + HPO42 - (aq) ⇌ 2 H2PO4 - (aq)