d
Pure nitrogen \(\Rightarrow\) Thermal decomposition of sodiumazide or Bariumazide

\({\left(2 \mathrm{NaN}_{3} \stackrel{4}{\longrightarrow} 2 \mathrm{Na}+3 \mathrm{N}_{2}\right)}\)

\({\left(\mathrm{Ba}\left(\mathrm{N}_{3}\right)_{2} \stackrel{\Delta}{\longrightarrow} \mathrm{Ba}+3 \mathrm{N}_{2}\right)}\)

Haber process \(\Rightarrow\) Formation of Ammonia

\(\left(\mathrm{N}_{2}+3 \mathrm{H}_{2} \rightleftharpoons 2 \mathrm{NH}_{3}\right)\)

Contact process \(\Rightarrow\) manufacture of \(\mathrm{H}_{2} \mathrm{SO}_{4}\)

Deacon's process \(\Rightarrow\) Formation of \(\mathrm{Cl}_{2}\) gas \(\left(\mathrm{HCl}+\mathrm{O}_{2(\mathrm{Atmosphere})} \stackrel{\mathrm{cucl_2}}{\longrightarrow} \mathrm{H}_{2} \mathrm{O}+\mathrm{Cl}_{2}\right)\)