What happens when water reacts with the following compounds?
Calcium phosphide, $$Ca_3P_2$$
$$Ca_3P_2$$ is inorganic compound composed of $$Ca^{+2}$$ and $$P^{-3}$$.
Calcium phosphide reacts with water to produce calcium hydroxide and phosphine gas (a flammable and poisonous gas).
$$Ca_{3}P_{2}+6H_{2}O\rightarrow 3Ca(OH)_{2}+2PH_{3}\uparrow$$