Complete the following equations: C 6 H 5 N 2 Cl → ( ii ) NaNO 2 / Cu , ∆ ( i ) HBF 4 .

The nitro compounds are generally prepared by treating the arenediazonium fluoroborate with an aqueous solution of sodium nitrite in presence of copper powder. The reaction is given below, C 6 H 5 N 2 Cl → ( ii ) NaNO 2 / Cu , ∆ ( i ) HBF 4 C 6 H 5 - NO 2 + N 2 + NaBF 4 .

Give only the equation for the synthesis of the fluorobenzene from benzene diazonium chloride.

The equation for the synthesis of the fluorobenzene from benzene diazonium chloride is as follows: When an aqueous solution of diazonium salt is treated with fluoroboric acid HBF 4 , diazonium fluoroborate gets precipitated. It is filtered and dried. When dry diazonium fluoroborate is heated, it composes of aryl fluoride and boron trifluoride. A r N 2 + Cl - + HBF 4 → ArN 2 + BF 4 - + HCl Diazonium fluoroborate Ar - N + ≡ NBF 4 → ∆ Ar - F + N 2 + BF 3 Aryl fluoride