MHT CET 2026 Chemistry question

Select the correct decreasing order of acid strength for the following compounds. a) Ethanol b) 2-Methyl propan-2-ol c) Phenol d) p - Nitrophenol

(A)a > b > c > d
(B)c > d > b > a
(C)d > c > a > bCorrect
(D)d > b > c > a

Answer: (C)

Solution

Compare the stability of the conjugate bases. Phenol (c) is much more acidic than alcohols because the phenoxide ion is resonance stabilised. In p-nitrophenol (d) the electron-withdrawing group (by and effects) further delocalises the negative charge, so d > c. Among the alcohols, the alkyl groups

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Question ID VK-100303