Chemistry In Everyday Life Question 159

Question: Which of the following represents soap

[DCE 2004]

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 $

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Answer:

Correct Answer: A

Solution:

Soaps are the sodium or potassium salt 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.