Question

1.which gas is liberated when acid reacts with metala? How will you test this gas?
2. what is neutralization reaction ? explain with example.

Answer 1

1. H2 (hydrogen) gas is liberated when an acid reacts with metal. we can test this by taking a burning matchstick near the test tube and the matchstick extinguishes with a pop up sound.

2. Reaction of an acid and a base to give salt and water is know as neutralisation reaction.

ex..
HCl + NaOH- NaCl +H2O

hope this helps you..