Question

which gas is usually liberated when an acids reacts with a metal ? how do you test the presence of this gas​

Answer 1

Answer:

Hydrogen gas is liberated when acids react with metal.

Answer 2

Answer:

When a metal reacts with an acid, hydrogen gas is liberated.

To test for the liberation of Hydrogen gas, cover the container with a lid and after some time put a lighted candle closer to the lid. open the lid a little. You will hear a pop sound proving that Hydrogen gas is liberated in a metal and acid reaction