Question

Identify the reagent used for replacement of \(-\text{N}_2^+\text{Cl}^-\) from benzene diazonium chloride by iodine.

• A. HI
• B. KOI
• C. KI
• D. \(\text{PI}_3\)

Hint:

Iodine is introduced with potassium iodide, no copper salt required.

Answer 1

The Correct Option is C

Step 1: Sandmeyer comparison
Chlorine and bromine need CuCl or CuBr. Iodine is introduced with simply KI.

Step 2: Answer
Option (C).

Final Answer:
KI. \[ \boxed{\text{(C)}\ KI} \]