First slide

Preparation of Haloarenes

Question

The reagents used in proper sequence are

Easy

A

${NaNO}_{2} + H_{2} {SO}_{4} / 273 K, {Cu}_{2} I_{2}$
B

${NaNO}_{2} + HCl / 278 K, Cu / HI$
C

${NaNO}_{2} + HCl / 273 K, KI$
D

${HNO}_{3} / 273 K, {Cu}_{2} I_{2}$

Solution

${NaNO}_{2} + HCl / 273 K - 278 K produces {HNO}_{2} in situation . It converts 1^{0} aryl amine to Benzene diazonium chloride .$

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