Question

How are gases prepared in chemistry?

Answer 1

There are many ways of prperation of gases in chemistry

Some are physical changes like heating or boiling of solids or liquids respectively.

While some are chemical changes which include reation of two or more compounds or elements..

Gases can also produced by electrolysis of electrolytic or polar componds.

One simple reaction for releas eof hyrogen gas is given below

Zn + 2HCl -------------> ZnCl$_{2}$ + H$_{2}$ ^