1.

Explain Laboratory Preparation of Dihydrogen.

Answer»

Solution :It is usually prepared by the REACTION of granulated zinc with dilute hydrochloric ACID.
`Zn+2H^(+) to Zn^(2+) + H_2`
It can also be prepared by the reaction of zinc with AQUEOUS alkali.
`Zn+2NaOH to underset"SODIUM zincate"(Na_2ZnO_2+H_2)`


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