Which of the following carboxylic acid is the strongest?
Correct answer: A. Dichloroacetic acid
- A. Dichloroacetic acid
- B. Chloroacetic acid
- C. Formic acid
- D. Acetic acid
Explanation
Greater -I effect, due to the presence of two chloro groups increase the acid strength of dichloroacetic acid
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About Reactivity of Carboxylic Acids
Carboxylic acids show acidic behaviour because their carboxylate ions are resonance-stabilised, and electron-withdrawing groups can change their strength. Reactions include neutralisation, esterification, formation of acid chlorides and amides, reduction, decarboxylation and substitution at the acyl carbon, which differs from the reactions of phenols.
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