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Electrolytic Refining

In electro-re...

Question

In electro-refining of metals, the impure metal is used as the anode and a strip of pure metal as the cathode. This method cannot be used for the refining of

A)
silver

copper

C)
aluminium

gold

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Solution

This method is not useful for refining of aluminium. Aluminium metal is reactive enough and tends to be solubilized rather than deposit on cathode.

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