The strongest acid among the following aromatic compounds is

1. $\mathrm{p}$ -chlorophenol
2. $\mathrm{p}$ -nitrophenol
3. m-nitrophenol
4. O-nitrophenol

Solution

Nitro group is strongly electron withdrawing group. At ortho position intra-molecular hydrogen bond reduces the acidic strength. .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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