Question

Give chemical equation of the laboratory prepartion of dihydrogen

Answer 1

Laboratory Preparation of Dihydrogen

Reacting Zinc with Acid

One common way to prepare dihydrogen gas in the lab is by reacting Zinc with a diluted acid. It results in Zinc forming Zinc Sulphate (or zinc chloride) and releasing hydrogen in a gas form

Zn + H2SO4 → ZnSO4 + H2

Zn +HCl → ZnCl2 + H2

Reacting Zinc with Alkaline

Zinc can also react with an aqueous alkali such as Sodium Hydroxide, The sodium and zinc will combine and give us dihydrogen as another product. The reaction is as follows

Zn + 2NaOH → Na2ZnO2 + H2

Answer 2

your answer

it can be formed with the help of granulated zinc and adding h2so4

zn+h2so4----> znso4 + h2
zn+2hcl-----> zncl2 + h2

thus h2 is obtained

hope helps