How many metal nitrides among the following will produce ammonia on hydrolysis?
$A l N, M g_{3} N_{2}, L i_{3} N, B a_{3} N_{2}, C a_{3} N_{2}$

1

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2

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4

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5

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Solution

The correct option is D $5$
$A l N + 3 H_{2} O \to A l (O H)_{3} + N H_{3}$
$M g_{3} N_{2} + 6 H_{2} O \to 3 M g (O H)_{2} + 2 N H_{3}$
$L i_{3} N + 3 H_{2} O \to 3 L i O H + N H_{3}$
$B a_{3} N_{2} + 6 H_{2} O \to 3 B a (O H)_{2} + 2 N H_{3}$
$C a_{3} N_{2} + H_{2} O \to 3 C a (O H)_{2} + 2 N H_{3}$
Therefore, all the five nitrides produce ammonia on hydrolysis.

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Similar questions

A l N, M g_{3} N_{2}, L i_{3} N, B a_{3} N_{2}, C a_{3} N_{2}

Hydrolysis of nitrides of s-block elements (for eg: $B a_{3} N_{2}, C a_{3} N_{2}, L i_{3} N)$ will yield:

L i

M g

N_{2}

L i_{3} N

M g_{3} N_{2}

L i

M g

N H_{3}

(C a_{3} N_{2})

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