Chemistry In Everyday Life Question 146

Question: Which of the following represents soap-

Options:

A) $ C _{17}H _{35}COOK $

B) $ C _{17}H _{35}COOH $

C) $ C _{15}H _{31}COOH $

D) $ {{( C _{17}H _{35}COO )}_2}Ca $

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Soaps are the sodium or potassium salts of higher fatty acids e.g., $ C _{17}H _{37}COOK $ (potassium stearate). These are obtained by alkaline hydrolysis of oils and fats. The reaction is called saponification.