As we know that Wurtz Reaction is carried out with Sodium metal which is highly reactive. Hence, we have to select a solvent which will not react with Sodium. Thus, ether becomes the best choice. Similarly, the alkyl halide should also dissolve in the solvent. The Sodium should be insoluble in the solvent which can be easily removed and alkanes formed should remain in solution, therefore it requires an aprotic solvent as the medium of the reaction. Dry ether is a very good non-polar, aprotic solvent for this purpose. Hence Dry ether is used.
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