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Which of the following processes can be ...

Which of the following processes can be used for preparation of `H_(2)`, gas

A

Dissolving LiH in water.

B

Reaction of Al with NaOH solution.

C

Reaction of Zn with dilute `H_(2)SO_(4)`

D

Electrolysis of `H_(2)O` in the presence of KOH.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
All of the above methods can be used for the preparation of `H_(2)` gas
A LiH(s) + `H_(2)O (l) rarr H_(2) (g) + LiOH (aq)`
(B) `2 Al+2NaOH + 6H_(2) O rarr 2Na + 2 [ Al(OH)_(4) ]^(-) + 3H_(2) (g)`
( C ) `Zn(s) + H_(2) SO_(4) (aq) rarr ZnSO_(4) (aq) + H_(2) (g)`
( D) Electrolysis of `H_(2) O` is best method for the formation of `99.97%` pure ` H_(2)`.
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