chemical eqn of preparing hydrogen

Asked by karanamvasu2 | 14th Jan, 2019, 07:24: AM

Expert Answer:

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

Reaction:

Metal  +  Dilute acid  →  Salt  +  Hydrogen

Zn  +  2HCl  →  ZnCl2  +  H2 ↑

Zn  +  H2SO4   →  ZnSO4  +  H2 ↑

Collection of gas: Hydrogen gas is collected by downward displacement of water.

Answered by Ramandeep | 14th Jan, 2019, 11:08: AM