On diluting an acid, it is advised to add acid to water and not water to acid. Explain why it is so advised?
Exothermic reaction: It is a reaction in which energy is emitted in the form of light or heat. Energy is released to the environment as the reaction proceeds.
The reaction of acid and water is an exothermic reaction since a lot of heat is liberated during the reaction. This heat changes some water to steam explosively which can splash the acid on our face or clothes and cause acid burns. Therefore,
Hence, adding acid to water is safe, but adding water to acid is not.