Question

Take 2 Gram barium Hydroxide in a test tube and mix one gram ammonium chloride with the help of stick (glass). now touch the bottom of the test tube with your palm. What do you feel? Which reaction takes place?

Answer 1

If we mix 2 Gram barium Hydroxide in a test tube and mix one gram ammonium chloride, due to the absorption of heat when we touch the bottom of the test tube, it becomes so cold.

This reaction is called an endothermic reaction.

In an endothermic reaction, the reaction absorbs all the heat from the environment.

Answer 2

When we add 2gm of Barium Hydroxide in testtube and mix one gram Ammonium Chloride to it, we find that testtube becomes cold.

It is an example of exothermic reactions.

During this it aborbs all the heat from the surrounding.