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Question: Answered & Verified by Expert
Assertion: Phenol undergoes Kolbe's reaction whereas ethanol does not.
Reason : Phenoxide ion is more basic than ethoxide ion.
ChemistryAlcohols Phenols and EthersAIIMSAIIMS 2015
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B Ifboth assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
1849 Upvotes Verified Answer
The correct answer is: If assertion is true but reason is false.
Phenol undergoes Kolbe's reaction (an electrophilic substitution reaction) because conjugate base (phenoxide ion) is less basic than ethoxide $\left(\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}\right)$ion.

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