A compound ‘X’ on

A compound X reacts with concentrated sulphuric acid at 443K to form an unsaturated compound Y. The reaction is –

Further X reacts with sodium metal to evolve a colourless gas Z

Here Z is hydrogen gas(H₂)

Y is an unsaturated compound formed by reaction of X and conc. H₂SO₄. Hence, H₂SO₄ is acting as a dehydrating agent here .

X is Ethyl alcohol (C₂H₅-OH) and Y is an unsaturated hydrocarbon. Y is ethene(C₂H₄).

X-C₂H₅-OH/Ethanol/Ethyl alcohol

Y-C₂H₄ / Ethene

Z-H₂/ Hydrogen

Equation:



Role of Sulphuric acid:
It is used as a dehydrating agent.