(a) A compound X having vinegar like smell when treated with ethanol in the presence of the acid, Z, gives a compound Y which has a fruity smell.

The reaction is

$\text{C}$2\text{H}5\text{OH} + \text{X} \xrightarrow{\text{Z}} \text{Y} + \text{H}_2\text{O}

1. Identify X, Y and Z.
2. Name the above reaction.

(b) Name the element in period 3 whose affinity is zero.

$\underset{\text{ethyl alcohol}}{\text{C}$2\text{H}5\text{OH}} + \underset{\text{acetic acid}}{\text{CH}3\text{COOH}} \xrightarrow{\text{Conc. H}2\text{SO}4} \underset{\text{ethyl ethanoate}}{\text{CH}3-\text{COO}-\text{C}2\text{H}5} + \text{H}_2\text{O}

(a)

1. X, Y and Z are:
   • X → Acetic acid
   • Y → Ethyl acetate
   • Z → Concentrated Sulphuric acid
2. Esterification reaction

(b) Argon