Question

Why is common salt added during saponification?

Answer 1

The saponification reaction is exothermic in nature, because heat is liberated during the process. The soap formed remains in suspension form in the mixture. Soap is precipitated as a solid from the suspension by adding common salt to the suspension. This process is called Salting out of Soap.

Answer 2

NACL is added to precipitate out all of the soap from the solution