Consider the acidity of the carboxylic acids- (i) \( \mathrm{PhCOOH} \) (ii) \( \mathrm{O}-\math...

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Consider the acidity of the carboxylic acids-
(i) \( \mathrm{PhCOOH} \)
(ii) \( \mathrm{O}-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH} \)
(iii) \( \mathrm{p}-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH} \)
(iv) \( \mathrm{m}-\mathrm{NO}_{2} \mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COOH} \)
which of the following order is correct for acidic strength-
(1) \( \mathrm{i}\mathrm{ii}\mathrm{iii}\mathrm{iv} \)
(2) ii \( \) iv \( \) iii \( \) i
(3) ii \( \) iv \( \) i \( \) iii
(4) ii \( \) iii \( \) iv \( \) i
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