Carboxylic acid reacts with metal to form salts with the evolution of:
Correct answer: B. H2
- A. CO2
- B. H2
- C. CO
- D. CH4
Explanation
Carboxylic acids react with metals, such as sodium or magnesium, to form salts (carboxylates) and hydrogen gas.
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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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