Which one of the following is strongest acid?
Correct answer: D. FCH2COOH
- A. CH3COOH
- B. CH3CH2COOH
- C. C6H5CG2COOH
- D. FCH2COOH
Explanation
D is the correct option, as it contains a halogen which have strong electron-withdrawing effects.
This question appeared on the ETEA MDCAT 2013 paper, which you can sit online with every answer explained.
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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.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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