As we will see shortly the primary use for this reaction is. M molarity of HCl solution. Total 3 Average 5 X2f 5 What Is Saponification In Soap Making What Is Soap Soaps Are Sodium Or Potassium Salts Soap Making Soap Making Process Soap The saponification reaction is exothermic in nature because heat is liberated during the process. . It is the chemical reaction in which the building blocks of fats and oils triglycerides react with lye to form soap. Kind of a long word but saponification. Soap is precipitated as a solid from the suspension by adding common salt to the suspension. The saponification of an aromatic ester with an aqueous sodium hydroxide was studied within a heterogeneous reaction medium in order to determine the overall kinetics of the selected system. The soap formed remains in suspension form in the mixture. Esters can be cleaved back into a carboxylic acid and an alcohol by reaction with water and a base.