Question

Highly pure dilute solution of sodium in liquid ammonia

• A. Produces sodium amide
• B. Shows blue colour
• C. Exhibits electrical conductivity
• D. Produces hydrogen gas

Answer 1

Answer: (B), (C)

Exhibits electrical conductivity

$Na+(x+y)N{H}_3⟶\left[Na\right(N{H}_3{)}_x{]}^{+}+\left[e\right(N{H}_3{)}_y{]}^{-}$

The emission spectrum of the solvated electrons $\left[e\right(N{H}_3{)}_y{]}^{-}$ is blue!

Because of the solvated ions, the solution is conducting. Neither sodium amide nor hydrogen gas are produced.