A highly pure dilute solution of sodium in liquid ammonia … A) has a blue colour; B) exhibits electrical conductivity; C) produces sodium amide; D) produces hydrogen gas, Which of the above answers is/are correct?
The answer is A) and B).
In dilute solutions of
In more concentrated solutions, the solution takes on a bronze/copper colour.
The equation is
The solution exhibits electricity because the solvated ions and electrons can carry the current.
The conductivity obviously depends on the concentration, but concentrated solutions (> 3 mol/L) are better conductors than liquid mercury.
C) and D)
The solution of sodium in liquid ammonia is quite stable on its own.
You need to add a small amount of a catalyst such as