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

Explanation

n-propyl iodide from n-propyl bromide. N-propyl bromissed on heating with concentrated solution of sodium iodide in acetone gives n-propyl Iodide. This reaction is called Finkelstein reaction.
`underset("n-propyl bromide")(CH_(3)CH_(2)CH_(2)Br+NaI) overset(Delta" (acetone)")to underset("n-propyl iodide")(CH_(3)CH_(2)CH_(2)I)+NaBr`.