Question

$Li+N_2\stackrel{\Delta }{⟶}A\stackrel{H_{2}O}{⟶}B+C\left(g\right)$, then the correctly matched pair for A, B and C is:

• A. $$\begin{array}{ccc}A& B& C\\ Li{N}_3& LiOH& N{H}_3\end{array}$$
• B. $$\begin{array}{ccc}A& B& C\\ L{i}_{3}N& LiOH& N{H}_3\end{array}$$
• C. $$\begin{array}{ccc}A& B& C\\ Li{N}_3& LiH& N{O}_2\end{array}$$
• D. $$\begin{array}{ccc}A& B& C\\ L{i}_{3}N& LiOH& N{O}_2\end{array}$$

Answer 1

The correct option is B $$\begin{array}{ccc}A& B& C\\ L{i}_{3}N& LiOH& N{H}_3\end{array}$$

Lithium on heating with $N_2$ gives lithium nitride which on treating with water gives lithium hydroxide and ammonia.
$Li+N_2\to \underset{A}{L{i}_{3}N}\stackrel{3H_{2}O}{⟶}\underset{B}{3LiOH}+\underset{C}{N{H}_3}$