One method of producing $$NH_{3}$$ is by heating ammonium chloride, $$NH_{4}Cl$$, with $$CaO$$.
$$2NH_{4} Cl + CaO \rightarrow 2NH_{3} + CaCl_{2} + H_{2}O$$
Explain why the reaction of $$NH_{4}Cl$$ with $$CaO$$ produces ammonia.
Solution:-
$$CaO$$ is more basic than $$N{H}_{4}Cl$$ and thus displaces ammonia $$\left( N{H}_{3} \right)$$ from $${N{H}_{4}}^{+}$$.