Question

a thin plate of copper and a thick rod of impure copper are used as electrodes in the process of pruficatoin of copper. draw the diagram to show electrorefining

Answer 1

hope it helps....................

Answer 2

Answer:

The thick rod of impure copper plate is to be attached to the positive terminal of the battery because when electric current is passed through the copper sulphate solution, it gets dissociated into copper and sulphate. The free copper, being positively charged, gets drawn to the negative terminal of the battery and gets deposited on it. On the other hand the loss of copper from the solution is regained from the impure copper rod which is attached to the positive terminal of the battery.

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