Identify the reagent used for replacement of -N_2^+Cl^- from benzene diazonium chloride by iodine.

MHT CET 2026 Chemistry question

Identify the reagent used for replacement of from benzene diazonium chloride by iodine.

(A)HI
(B)KOI
(C)KICorrect
(D)

Answer: (C)

Solution

Benzene diazonium chloride is converted to iodobenzene simply by warming with aqueous potassium iodide; no copper catalyst is needed (unlike chlorination or bromination by Sandmeyer reaction): $ + KI → +

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Question ID VK-099099