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  •  When sodium hydride is dissolved in water  Option: 1 It is an exothermic reaction.

 When sodium hydride is dissolved in water

 

Option: 1

It is an exothermic reaction.


Option: 2

NaOH and H2 are formed.


Option: 3

H2 is produced at anode.


Option: 4

All of the above


Answers (1)

best_answer

Electrolysis of solution of saline hydride in molten alkali halide produces \mathrm{H}_2   at anode. Saline hydrides react explosively with water.
\mathrm{\mathrm{NaH}(s)+\mathrm{H}_2 \mathrm{O}(a q) \rightarrow \mathrm{NaOH}(a q)+\mathrm{H}_2(g)}
The fire so produced cannot be extinguished by  \mathrm{CO}_2  as it gets reduced by the hot metal hydride. Only sand is useful, as it is a solid.

Posted by

Devendra Khairwa

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