Chemistry

Problem

Which of the following aqueous equilibria will shift toward products when the reaction mixture is diluted with water at constant temperature? a)

\mathrm{CrO_4^{2-}(aq) + 2H^+(aq) \rightleftharpoons Cr_2O_7^{2-}(aq) + H_2O(l)}

\mathrm{H_2(aq) + I_2(aq) \rightleftharpoons 2HI(aq)}

\mathrm{CO_2(aq) + H_2O(l) \rightleftharpoons H^+(aq) + HCO_3^-(aq)}

\mathrm{N_2(aq) + 3H_2(aq) \rightleftharpoons 2NH_3(aq)}