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Amines

Question
CBSEENCH12010971

Consider the acidity of the carboxylic acids

  • PhCOOH

  • p – NO2C6H4COOH

  • o – NO2C6H4COOH

  • m – NO2C6H4COOH

Solution

C.

o – NO2C6H4COOH

-NO2 group at any position shows electron withdrawing effect thus acid strength is increased. But o -nitro benzoate ion is stabilised by intramolecular H-bonding. Hence its acid strength is maximum. The effect is more at para position.