Question

explain the laboratory preparation of dihydrogen​

Answer 1

Answer:

1) In laboratory it is prepared by the reaction of granulated zinc with dil. Hcl. Commercial preparation of Hydrogen: Hydrogen is prepared by the electrolysis water using Platinum electrode. .When electric current is passed through water it decomposes to hydrogen and oxygen.

Answer 2

Laboratory method of preparation of dihydrogen

Answer

Hydrogen is prepared in the laboratory by the action of the dilute hydrochloric acid or dilute sulphuric acid on granulated zinc.

• Use of Granulated Zinc.
• Reaction:
• Collection of Gas: Hydrogen gas is collected by downward displacement of water.