While studying sa A. reduce the alkalinity of the soap.

B. reduce the acidity of the sop.

C. enhance the cleansing capacity of soap

D. favour precipitation of soap.

The correct answer is: option (d).

Saponification is the reaction of alkaline hydrolysis of ethyl ethanoate. The Ethyl ethanoate is heated by addition of Sodium hydroxide results in formation of Sodium Ethanoate and Ethanol. Thus, reaction is used for making soaps.

CH₃COOC₂H₅ + NaOH CH₃COONa + C₂H₅OH

common salt is added to precipitate out the soap during saponification reaction because salt helps in decreasing the solubility of the soap and precipitating it out.