STANDARD Chemistry Alkynes MCQ Question
Addition of water to alkynes occurs in acidic medium and in the presence of Hg²⁺ ions as a catalyst. Which of the following products will be formed on addition of water to but-1-yne under these conditions?
Option 1: CH₃–CH₂–CH₂–C≡CH
Option 2: (Image of CH₃–CH₂–C=O–CH₃)
Option 3: CH₃–CH₂–C–OH + CO₂
Option 4: CH₃–C=O–CH + H–C=O
Correct Answer
Detailed Explanation
The addition of water to but-1-yne in the presence of Hg²⁺ ions leads to the formation of a ketone, specifically butan-2-one, due to Markovnikov's rule.
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