Introduction to Acids and Bases Practice Test

A student dissolves sodium acetate in water. Consider the reaction $\mathrm{CH_3COO^-(aq) + H_2O(l) \rightleftharpoons CH_3COOH(aq) + OH^-(aq)}$. In this reaction, $\mathrm{CH_3COO^-}$ acts as the

A student studies the reaction $\mathrm{H_2PO_4^-(aq) + H_2O(l) \rightleftharpoons HPO_4^{2-}(aq) + H_3O^+(aq)}$. Which species is the conjugate base of $\mathrm{H_2PO_4^-}$ in this reaction?