Consider the acidity of the carboxylic acids (i) $PhCOOH$ (ii) $o - NO_{2}C_{6}H_{4}COOH$ (iii)$p - NO_{2}C_{6}H_{4}COOH$ (iv)$m - NO_{2}C_{6}H_{4}COOH$ Which of the following order is correct?

Question

Dr. Abubacker · Accepted Answer

(d)
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$- NO_{2}$ group at any position shows electron withdrawing effect. Thus, acid strength is increased. But o-nitro benzoate ion is stabilised by intramolecular H-bonding like forces. Hence its acid strength is maximum.
Thus, the order of acid strength is (II) > (III) > (IV) > (I).

Q. Consider the acidity of the carboxylic acids (i) $PhCOOH$ (ii) $o - NO_{2}C_{6}H_{4}COOH$ (iii)$p - NO_{2}C_{6}H_{4}COOH$ (iv)$m - NO_{2}C_{6}H_{4}COOH$ Which of the following order is correct?

Explanation

Reviewed by Dr. Abubacker

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