Question

Why sodium hydroxide is not used preparation of ammonia gas?

Answer 1

Answer:

Reactions. Ammonium chlorideappears to sublime upon heating but actually decomposes into ammoniaand hydrogen chloride gas. Ammonium chloride reacts with a strong base, like sodium hydroxide, to release ammoniagas: NH4Cl + NaOH → NH3 + NaCl + H2O.