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NEET levelSingle correct optionDifficulty 1 of 3hc166

A mixture of $CH X_{3} Br$ and $C X_{2} H X_{5} Br$ is treated with sodium metal in dry ether (Wurtz reaction). How many different alkanes are formed?

A1
B2
C3
D4

Answer: C

Coupling can occur between two

CH X_{3}

groups (ethane), two

C X_{2} H X_{5}

groups (butane) or one of each (propane). So three alkanes form, which is why Wurtz coupling of two different halides is not preparatively useful.

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