QJEEM24Ch7654: JEE Main 2024 Chemistry - Class 12 JEEM24Ch7654 Solution: Given below are two statements: One is labelled as Assertion A…

Question

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Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $\mathrm{pK}_{\mathrm{a}}$ value of phenol is 10.0 while that of ethanol is 15.9 .

Reason R: Ethanol is stronger acid than phenol.

In the light of the above statements, choose the correct answer from the options given below:

A A is false but R is true.
B Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$ .
C Both $\mathrm{A}$ and $\mathrm{R}$ are true and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$ .
D $A$ is true but $R$ is false.

Accepted Answer

Phenol is more acidic than ethanol because conjugate base of phenoxide is more stable than ethoxide.

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