Question

Name the gas generally liberated when an acid reacts with a metal.Illustarte with an example.How will you test this gas in your laboratory? [2]

Answer 1

The gas evolved is HYDROGEN.

example:

Zn + 2HCl ----> ZnCl2 + H2

Test:

When burning splinter is brought near gas evolution point, if it burns eith popping sound, it is hydrogen