Question

Assertion: Sodium chloride is added to precipitate soap after saponification.

Reason: Hydrolysis of esters of long-chain fatty acids by alkali produces soap in colloidal form.

• A. Assertion is correct statement reason is wrong statement
• B. Assertion and reason both are correct, and reason explains the assertion
• C. Assertion is wrong statement reason is correct statement
• D. Assertion and reason both are correct statement, but reason does not explain assertion
• E. Both assertion and reason are wrong statements

Answer 1

The correct option is B Assertion and reason both are correct, and reason explains the assertion

Assertion

➢ Hydrolysis of esters of long-chain fatty acids by alkali gives the soap, which remains in colloidal form. The process is called saponification.

⮚ Precipitation of the soap is done by the addition of $NaCl$ (sodium chloride) which is a different process.

So, assertion is correct.

Reason

Hydrolysis of esters of long-chain fatty acids by alkali produces soap, which remains in colloidal form.

Therefore, reason is also correct.

So, both assertion and reason are correct statements, and reason explains the assertion.

So correct answer is option $\left(B\right)$