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Question

Highly pure dilute solution of sodium in liquid ammonia


A

Produces sodium amide

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B

Shows blue colour

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C

Exhibits electrical conductivity

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D

Produces hydrogen gas

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Solution

The correct option is C

Exhibits electrical conductivity


Na+(x+y)NH3[Na(NH3)x]++[e(NH3)y]

The emission spectrum of the solvated electrons [e(NH3)y] is blue!

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


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