IN a chemical reaction Aniline is treated with NaNO ₂ and HCl to form a compound X. When X is further hydrolyzed by supplying heat it forms compound Z. Identify Z in this reaction.

Step-by-step solution

Aniline ( Ar-NH ₂ ) reacts with NaNO ₂ and HCl at 0-5^ C to undergo diazotization, forming benzene diazonium chloride ( Ar-N ₂^+ Cl ^- ) as compound X. Ar-NH ₂ + NaNO ₂ + 2 HCl 0-5^ C Ar-N ₂^+ Cl ^- + NaCl + 2 H ₂ O When the diazonium salt X is hydrolyzed by warming with water (supplying heat), it decomposes to form phenol ( Ar-OH ) as compound Z, along with the evolution of nitrogen gas. Ar-N ₂^+ Cl ^- + H ₂ O Ar-OH + N ₂ + HCl Thus, compound Z is Ar-OH . Answer: Ar-OH