Question

Discuss briefly the preparation of dry hydrogen

Answer 1

Answer:

In the laboratory, dihydrogen gas is prepared by taking zinc granules in a 500 ml flask.

To this, dilute HCl or dilute sulphuric acid is added through a thistle funnel.

Dihydrogen gas is released and the gas is collected by the downward displacement of water because it is a gas lighter than water

Reaction:

Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)

Zn(s)+H2SO4(aq)→ZnSO4(aq)+H2(g).