Question

How can glycerol be prepared by saponification reaction?

Answer 1

**Saponification is a process by which triglycerides are reacted with sodium or potassium hydroxide (lye) to produce glycerol and a fatty acid salt called "soap." The triglycerides are most often animal fats or vegetable oils. When sodium hydroxide is used, a hard soap is produced

**When triglycerides in fat/oil react with aqueous NaOH or KOH, they are converted into soap and glycerol. This is called alkaline hydrolysis of esters. Since this reaction leads to the formation of soap, it is called the Saponification process. Thus, the soap molecule has a polar head and a non-polar hydrocarbon tail.

**The products of a saponification are a soap and glycerol. Soaps are water soluble sodium or potassium salts of fatty acids.

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