Question

(a)how is dihydrogen prepared in laboratory?

Answer 1

hey buddy
here ur answer

In the laboratory, H2 is usually prepared by the reaction of acids on metals such as zinc with Kipp's apparatus. The electrolysis of water is a simple method of producing hydrogen. ... The theoretical maximum efficiency (electricity used vs. energetic value of hydrogen produced) is between 8094%.

hope it helps u

Answer 2

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.