In Wurtz reaction, the reagent used is When ethyl bromide is heated with sodium in dry ether solvent, the alkane obtained is

When two moles of ethyl bromide react with two moles of sodium in presence of dry or anhydrous ether it forms butane as a product. The above reaction is written below:
  2C₂H₅−Br+2Na $\stackrel{\mathrm{dryether}}{\to }$C₂H₅−C₂H₅+2NaBr
                                                            (Butane)
It is an example of Wurtz reaction.
The obtained product butane is a symmetrical alkane with double the number of carbon atoms present in the ethyl bromide