Question

Which of the following halogen exchange reaction will occur in acetone?

• A. $R-I+NaCl\to$
• B. $R-F+KCl\to$
• C. $R-Cl+NaI\to$
• D. $R-F+AgBr\to$

Answer 1

The correct option is C $R-Cl+NaI\to$

Bromides and chlorides are insoluble in acetone and hence they can't form a solution with acetone to react with alkyl halides. Sodium iodide, however, is soluble in acetone thus forms a solution with acetone and reacts with alkyl halides, thus undergoing Finkelstein reaction to form corresponding alkyl iodide.

The general reaction is shown in the image

Hence, the correct option is $C$