JEE Main Chemistry question

Which of the following compounds is most acidic?

(A)Cl–CH₂–CH₂–OH
(B)o-nitrophenolCorrect
(C)Phenol
(D)o-cresol

Answer: (B)

Solution

The strongly electron-withdrawing −M/−I nitro group (plus intramolecular H-bonding stabilization in the ortho isomer) dramatically stabilizes the phenoxide conjugate base, making o-nitrophenol

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Question ID VK-139037