Carboxylic acid reacts with ammonia to form ammonium salts which on heating produces
Correct answer: D. Acetamide
- A. CO2
- B. Alkane
- C. Ester
- D. Acetamide
Explanation
When an ammonium salt of a carboxylic acid is heated, it undergoes a dehydration reaction, losing a molecule of water (H₂O) and forming an amide. This reaction, known as amidation, can be represented by the general equation:R-COOH + NH₃ → R-COONH₄ → R-CONH₂ + H₂OHere, R represents the alkyl group of the carboxylic acid. In this case, the ammonium salt loses a water molecule, causing the amino group and the carboxylic acid group to condense and form an amide bond (-CONH₂).
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About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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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