Asked in NUMS 2019 (cancelled sitting) 2019Moderate

What happens if we react a carboxylic acid with an acyl chloride?

Correct answer: A. It forms an acid anhydride

  • A. It forms an acid anhydride
  • B. It forms an acyl halide
  • C. It does not react due to resonance
  • D. It does not react due to bad leaving group

Explanation

When a carboxylic acid reacts with an acyl chloride, it forms an acid anhydride through the elimination of HCl. The general reaction can be represented as:RCOCl + R'COOH → RCOOCOR' + HCl

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About Carboxylic Acid Derivatives

Carboxylic acid derivatives include acid halides, acid anhydrides, esters and amides, formed by replacing the hydroxyl group of a carboxylic acid. Their nomenclature, structures, preparation, hydrolysis and relative reactivity are linked through nucleophilic acyl substitution, which differs from the nucleophilic addition reactions of aldehydes and ketones.

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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