Identify the reagent used for the replacement | vedclass

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(C) The reaction of benzene diazonium chloride with potassium iodide $(KI)$ is a standard method to introduce an iodine atom into the benzene ring.Ste

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$KI$

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(C) The reaction of benzene diazonium chloride with potassium iodide $(KI)$ is a standard method to introduce an iodine atom into the benzene ring.Step $1$: The diazonium salt reacts with $KI$ in an aqueous solution.Step $2$: The $-N_2^+Cl^-$ group is replaced by an iodine atom to form iodobenzene and nitrogen gas $(N_2)$ is evolved.Reaction: $C_6H_5N_2^+Cl^- + KI \rightarrow C_6H_5I + N_2 + KCl$.

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

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