Question

explain the electro refining of impure coppe

Answer 1

The apparatus used for the electro refining of copper . The apparatus consist of electrolytic tank containing actified copper sulphate solution as electrolyte.A thick block of impure copper is made up of annode and a thin strip of pure copper metal is cathode on passing the current impure copper from the anode dissolve and goes into copper sulphate solution and pure copper from the copper sulphate solution deposits on cathode thus pure copper metal is produces at cathode

Answer 2

Refining is a process of obtaini h pure metal by the process of electrolysis.

The process of electro Refining of copper is done in the following ways

1. An electrolytic tank is taken containing the acidified copper sulphate solution

2. In that a pure copper metal strip is taken as cathode and an impure copper metal is taken as anode.

On passing electricity impure copper ions from the anode dissolves into cuso4 and the pure copper ions moves from the cuso4 solution to the cathode.

Thus pure copper metal is obtained at the cathode and the impure copper metal is obtained as anode mud at the anode.

The reaction is as follows

At cathode : cu2+ + 2e- gives cu

At anode: cu - 2e gives cu

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