Question

Select the correct word/formula from the choices given below:

$Pt,N{H}_{4}OH,CaC{l}_2,N_2,CaO,AlN,K_{2}Hg{I}_4,Fe,NC{l}_3,urea$

A substance which on action with water releases ammonia.

Answer 1

• The production of ammonia ${\mathrm{NH}}_3$ can be carried out by treating aluminium nitride $\mathrm{AlN}$ with water.
• The reaction is given as follows:
• $$\begin{gathered} \mathrm{AlN}\left(\mathrm{s}\right)+3{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to \mathrm{Al}{\left(\mathrm{OH}\right)}_3\left(\mathrm{s}\right)+{\mathrm{NH}}_3\left(\mathrm{g}\right) \\ \mathrm{Aluminium}\mathrm{Water}\mathrm{Aluminium}\mathrm{Ammonia} \\ \mathrm{nitride}\mathrm{hydroxide} \end{gathered}$$
• Thus, $\mathrm{AlN}$ is a substance which on action with water releases ammonia.