AIIMS 2017 Chemistry Hofmann Bromamide Reaction MCQ Question
Assertion (A): When acetamide reacts with and , methyl amine is formed.
Reason (R): The reaction occurs through the intermediate formation of an isocyanate.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false.
Both Assertion and Reason are false.
Correct Answer
Detailed Explanation
When acetamide (CH₃CONH₂) reacts with Br₂ and NaOH, it undergoes a halogenation reaction leading to the formation of methyl amine (CH₃NH₂) and sodium carbonate (Na₂CO₃) as byproducts. This reaction involves the deamination of acetamide, where the amine group is retained, and the carbonyl group is converted into a carboxylate, which subsequently forms Na₂CO₃ upon reaction with NaOH.
Options B, C, and D are incorrect because they suggest the formation of sodium bromide (NaBr), sodium hydroxide (NaOH), or sodium sulfate (Na₂SO₄), none of which are products of the reaction between acetamide, Br₂, and NaOH.
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