Question

The hydrocarbon which can react with sodium in liquid ammonia is

Answer 1

CH3CH2C≡CH
because
Terminal alkynes (triple bond is at first & second carbon atom) react with sodium in liquid ammonia to yield ionic compounds - sodium alkylides.

The acidity of a terminal alkyne is due to the high level of s character in the sp hybrid orbital, which bonds with the s orbital of the hydrogen atom to form a single covalent bond.

Answer 2

Explanation:

Terminal alkynes react with sodium in liquid ammonia since it has acidic hydrogen and NH

2

-

acts base.

Therefore ch3ch2C≡CH reacts with sodium in liquid ammonia.