Question

Convert chloroethane to butane.

Answer 1

Chloroethane is converted into butane by wurtz reaction.

In wurtz reaction the alkyl halide react with sodium to form a new carbon carbon compound.

This is one of the oldest organic reaction in which 2 alkyl halides couple with sodium metal in the presence of dry Ether to form a new carbon carbon compound resulting in a symmetrical alkane.
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Chemical reaction is in the attachment...

Answer 2

Answer:

Using wurtz reaction is the best method.

CH3-CH2-Cl + Na + Dry Ether ------> CH3-CH2-CH2-CH3 (butane)