Consider the acidity of the carboxylic acids:

1. $\mathrm{PhCOOH}$
2. $\mathrm{O}-\mathrm{NO}_2 \mathrm{C}_6 \mathrm{H}_4 \mathrm{COOH}$
3. $\mathrm{p}-\mathrm{NO}_2 \mathrm{C}_6 \mathrm{H}_4 \mathrm{COOH}$
4. $\mathrm{m}-\mathrm{NO}_2 \mathrm{C}_6 \mathrm{H}_4 \mathrm{COOH}$

Solution

Asked in: JEE Main 2004

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