JEE Main Chemistry question

To prepare pure *n*-hexane using sodium metal as one reactant (Wurtz reaction), the other reactant should be

(A)Ethyl bromide and *n*-butyl bromide (mixed)
(B)Methyl bromide and *n*-pentyl bromide (mixed)
(C)*n*-Propyl bromide (alone)Correct
(D)Ethyl bromide and *n*-butyl bromide (mixed, repeated)

Answer: (C)

Solution

A mixed pair of different alkyl halides gives a statistical mixture of self-coupled and cross-coupled products — not a pure single hydrocarbon. Using only one alkyl

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Question ID VK-142618