Which of the following represents soap?

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Question

(A) Soaps are defined as the sodium or potassium salts of long-chain fatty acids. $C_{17}H_{35}COOK$ (Potassium stearate) is a potassium salt of stear

Vedclass · Accepted Answer

$C_{17}H_{35}COOK$

Vedclass · Answer

(A) Soaps are defined as the sodium or potassium salts of long-chain fatty acids. $C_{17}H_{35}COOK$ (Potassium stearate) is a potassium salt of stearic acid,which is a higher fatty acid,and thus it represents a soap. $C_{17}H_{35}COOH$ and $C_{15}H_{31}COOH$ are fatty acids,not salts. $(C_{17}H_{35}COO)_2Ca$ is a calcium salt,which is insoluble in water and is not considered a soap (it forms scum). Therefore,the correct option is $A$.

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