Question

Explain the purposes of cleaning copper and zinc cathodes

Answer 1

Because in process of electrolicis the dust or other things can move towards anode

Answer 2

This is done to ensure that the impurities don’t become an occurrence in the cathode coating.

Explanation:

• The water filtration technique runs at high purity standards. The presence of dirty cathodes introduces the occurrence of dust and other impurities.
• These impurities are formed due to their reaction with air and hence forming oxides which make a coating on the cathodes.
• To remove this coating and additional dust and impurities, the cathodes are cleaned and rubbed.
• The cleaning of the cathode will improves the accuracy of the titration.