i) X is Ethanol is CH3CH2OH and T is Ethanoic acid, i.e., CH3COOH.
ii) Ethyl alcohol undergoes oxidation to form the product Acetaldehyde and finally Acetic acid.

Here CH3COOH is used as preservative for pickles.
When X reacts with Y it forms ethyl acetate and water which is called esterification reaction.
CH3COOH + C2H5OH → CH3COOC2H5 + H2O