Soaps are prepared by treating the esters of fatty acid with alkali. Sometimes common salt is also added to it. Why is common salt added during this process?
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Explanation:
Sodium chloride is added to precipitate soap after saponification. Salt is added to decrease the solubility of soap and it help precipitate out (or salt out) from the aqueous solution. Hydrolysis of esters of long chain fatty acids by alkali produces soap in colloidal form.
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Soaps are prepared by treating the esters of fatty acid with alkali. Sometimes common salt is also added to it. This process is called salting out of soap.
Explanation:
- Oil, fat or lipids (esters of fatty acid) in the presence of aqueous alkali is converted to soap, this process is saponification.
- After this process is completed, the soap remains as suspension. To precipitate the soap, common salt is added to this mixture. This procedure is called salting out of soap.
- The remaining mixture is called the brine.
To learn more:
1) What are soaps?how they are prepared:
https://brainly.in/question/7635331
2) Soaps are prepared by alkaline hydrolysis of a:
https://brainly.in/question/15685633
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