Q60. Xg of ethanamine was subjected to reaction with $\mathrm { NaNO } _ { 2 } / \mathrm { HCl }$ followed by hydrolysis to liberate $\mathrm { N } _ { 2 }$ and HCl . The HCl generated was completely neutralised by 0.2 moles of $\mathrm { NaOH } . X$ is $\_\_\_\_$ g.