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Acidity of Carboxylic Acids

Consider the ...

Question

Consider the acidity of carboxylic acids i.Ph - COOH ii. o - NO₂ C₆H₄COOH iii. p - NO₂ C₆H₄COOHiv. m - NO₂ C₆H₄COOH which of the following order is correct

i > ii > iii >iv

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ii >iv> iii > I

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ii >iv> I > iii

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ii > iii >iv> I

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Solution

The correct option is D ii > iii >iv> I
-NO₂ group is deactivator and increases acidic nature and in ortho&para position involved in resonance but not in meta position

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