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Question
Which of the following is halogen exchange reaction?
Options
\[\mathrm{RX}+\mathrm{Nal}\longrightarrow\mathrm{RI}+\mathrm{NaX}\]
\[\mathrm{R-OH+HX\xrightarrow{ZnCl_{2}}R-X+H_{2}O}\]
MCQ
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Solution
\[\mathrm{RX}+\mathrm{Nal}\longrightarrow\mathrm{RI}+\mathrm{NaX}\]
Explanation:
Alkyl iodides are often prepared by the reaction of alkyl chlorides/ bromides with Nal in dry acetone. This reaction is known as Finkelstein reaction. This reaction is also known as halogen exchange reaction.
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