## Chemistry: The Molecular Science (5th Edition)

$S^{2−}(aq) + 2 H^{+}(aq) → H_{2}S(g)$
Sodium sulfide reacts with hydrochloric acid to form Sodium chloride and Hydrogen sulfide gas. The net ionic equation is: $S^{2−}(aq) + 2 H^{+}(aq) → H_{2}S(g)$