The major product Y formed in the following sequence of reactions is : C ₆ H ₅ CONH ₂ P ₂ O ₅, W LiAlH ₄ X NaNO ₂/ HCl, 273 K Y

Step-by-step solution

The reaction of benzamide with P ₂ O ₅ upon heating results in dehydration to form benzonitrile. C ₆ H ₅ CONH ₂ P ₂ O ₅, C ₆ H ₅ CN ( W ) Reduction of benzonitrile with LiAlH ₄ yields benzylamine. C ₆ H ₅ CN LiAlH ₄ C ₆ H ₅ CH ₂ NH ₂ ( X ) Benzylamine is an aliphatic primary amine. Reaction with nitrous acid ( NaNO ₂/ HCl ) at 273 K forms an unstable aliphatic diazonium salt, which immediately decomposes by reacting with water to yield benzyl alcohol and nitrogen gas. C ₆ H ₅ CH ₂ NH ₂ NaNO ₂/ HCl, 273 K C ₆ H ₅ CH