Question

Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?

Answer 1

Hydrogen is liberated.
e.g-H2SO4+2Na---->Na2SO4+H2
keep a lighted match stick at the mouth of the test - tube in which reaction takes place. Hydrogen burns with a pop sound. This is the test for hydrogen

Answer 2

Hydrogen is liberated.

e.g-H2SO4+2Na---->Na2SO4+H2

keep a lighted match stick at the mouth of the test - tube in which reaction takes place. Hydrogen burns with a pop sound. This is the test for hydrogen