MHT CET Chemistry question

The strongest acid among the following aromatic compound is

(A)o-nitrophenol
(B)phenol
(C)p-nitrophenolCorrect
(D)m-nitrophenol

Answer: (C)

Solution

A nitro group at the o- or p-position stabilises the phenoxide ion by -R and -I effects, so the nitrophenols are stronger than phenol; p-nitrophenol (pK_a$ ≈

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Question ID VK-079918