JEE Mains · Chemistry · STD 12 - 7. Alcohol, phenol and ethers
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 true but \(R\) is false.
- B A is false but \(R\) is true.
- C Both \(A\) and \(R\) are true and \(R\) is the correct explanation of \(A\).
- D Both \(A\) and \(R\) are true but \(R\) is NOT the correct explanation of \(A\).
Answer & Solution
Correct Answer
(A) \(A\) is true but \(R\) is false.
Step-by-step Solution
Detailed explanation
Phenol is more acidic than ethanol because conjugate base of phenoxide is more stable than ethoxide.
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