The increasing order of the acidity of the following carboxylic acids is:
The increasing order of the acidity of the following carboxylic acids is:
III $ < $ II $ < $ IV $ < $ I
I $ < $ III $ < $ II $ < $ IV
IV $ < $ II $ < $ III $ < $ I
II $ < $ IV $ < $ III $ < $ I
Solution
The increasing order of the acidity of the carboxylic acids is III $ < $ II $ < $ IV $ < $ I. In aromatic acids, electron withdrawing groups like $\mathrm{Cl},-\mathrm{CN},-\mathrm{NO}_2$ increases the acidity, whereas electron releasing groups like $\mathrm{CH}_3,-\mathrm{OH},-\mathrm{OCH}_3,-\mathrm{NH}_2$ decreases the acidity.
