How will you prepare n-propyl iodide from n-propyl bromide?

1.	How will you prepare n-propyl iodide from n-propyl bromide?
Answer» SOLUTION :Finkelstein reaction : n-propyl bromide on heating with a concentrated solution of sodium iodide in dry acetone GIVES I-propyl iodide. This`S_(N^2)`reaction is called Finkelstein reaction. `underset("n - propyl bromide")(CH_3 - CH_2 - CH_2Br+ NAL) overset("Acetone")to underset("n - propyl iodide")(CH_3 - CH_2 - CH_2I) + NABR`

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