## Chemistry (7th Edition)

(a) $2Ag^+(aq) + CrO_4^{2-}(aq) --\gt Ag_2CrO_4(s)$ (b) $2H^+(aq) + MgCO_3(s) --\gt CO_2(g) + H_2O(l) + Mg^{2+}(aq)$ (c) $Hg^{2+}(aq) + 2I(aq) --\gt HgI_2(s)$
1. Write the ionic equation. Identify the strong electrolytes, and separate their ions: - Aqueous ionic compounds. - Strong acids. (a) $2Ag^+(aq) + 2NO_3^-(aq) + 2Na^+(aq) CrO_4^{2-}(aq) --\gt Ag_2CrO_4(s) + 2Na^+(aq) + 2NO_3^-(aq)$ (b) $2H^+(aq) + SO_4^{2-}(aq) + MgCO_3(s) --\gt CO_2(g) + H_2O(l) + Mg^{2+}(aq) + SO_4^{2-}$ (c) $Hg^{2+}(aq) + 2NO_3^-(aq) + 2NH_4^+(aq) + 2I(aq) --\gt HgI_2(s) + 2NH_4^+(aq) + 2NO_3^-(aq)$ 2. Remove the repeated ions. (a) $2Ag^+(aq) + CrO_4^{2-}(aq) --\gt Ag_2CrO_4(s)$ (b) $2H^+(aq) + MgCO_3(s) --\gt CO_2(g) + H_2O(l) + Mg^{2+}(aq)$ (c) $Hg^{2+}(aq) + 2I(aq) --\gt HgI_2(s)$