1.

In order to refine blister copper , it melts in a furnance and is stirred with green logs of wood . The purpose is

Answer»

to expel the dissoved gases in blister copper
to bringthe impuritiesto surface and oxidise them
to increase the CARBON CONTENT of copper
to REDUCE the metallic oxide IMPURITIES with hydrocarbon gases LIBERATED from the wood

Solution :`2Cu_(2)S+3O_(2) to 2Cu_(2)O+2SO_(2) `
`3Cu_(2)O+ underset("From green logs of wood")(CH_(4)) to 6Cu+2H_(2)O+CO`


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