Question

Convert ethyne to ethane.

Answer 1

Ethyne is an unsaturated hydrocarbon, and when hydrogen and acetylene are passed over finely divided nickel at 200°C, it forms an additional compound, ethane.

\[\ce{\underset{Acetylene}{H - C ≡ C - H} + H2 ->[Ni 200^\circ C] \underset{Ethene}{CH2 = CH2} ->[Ni 200^\circ C] \underset{Ethane}{CH3 - CH3}}\]