What happens when a solution of benzene diazonium bromide and an aqueous solution potassium iodide are shaken together?

What happens when a solution of benzene diazonium bromide and an aqueous solution potassium iodide are shaken together? Correct Answer Iodobenzene is formed

Since iodine is more reactive, the replacement of diazonium group to form iodobenzene does not require the presence of a cuprous halide and is done simply by shaking the diazonium salt with KI.
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