Which of the following reactions can be used to convert an alkyl halide into an alkane containing double the number of carbon atoms?

Answer and explanation

Correct answer: D. Wurtz reaction

  1. Step 1: The Wurtz reaction involves treating an alkyl halide with sodium metal in dry ether.
  2. Step 2: The reaction couples two alkyl radicals or organosodium intermediates: .
  3. Step 3: This produces a symmetrical alkane containing twice the number of carbon atoms present in the starting alkyl halide.
Answer
Wurtz reaction.
Why not the others: Kolbe's electrolytic reaction uses carboxylic acid salts; Cannizzaro reaction converts aldehydes to alcohols and carboxylates; Clemmensen reduction reduces aldehydes or ketones to alkanes without doubling carbons.

Practise more Hydrocarbons and reaction mechanisms.

Free questions with an explanation for every one, and full timed JEE Main mock tests.