Question

Identify the compound (Z) formed when aniline is subjected to the following series of reactions: i.) NaNO2, H2SO4, 0-5 oC; ii.) Cu2O, Cu(NO3)2, H2O

Answer 1

Aniline, when reacted with NaNO2 and H2SO4, forms a diazonium salt which when treated with Cu2O, Cu(NO3)2, and H2O, forms chlorobenzene as the final product.

Step-by-step explanation:

The compound formed when aniline (C6H5NH₂) undergoes the series of reactions with NaNO₂ and H₂SO₄ at 0-5 °C is a diazonium salt, specifically benzenediazonium chloride (C6H5N2+ Cl-).

This is because aniline reacts with NaNO₂ and H₂SO₄ to form a diazonium salt through a diazotization reaction.

Following this, when the diazonium salt is treated with Cu₂O, Cu(NO₃)₂, and H₂O, the typical reaction is a Sandmeyer reaction, which yields chlorobenzene (C6H5Cl) as the organic product (compound Z).