Chemistry
The diagram shown is a wrong attempt to electroplate a pan with copper:
Which of the following could have been done to copper plate a pan?
- To change DC to AC.
- To change the electrolyte from copper sulphate to cobalt sulphate.
- Connect the pan to the negative electrode.
- To induce a higher current.
Electrolysis
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Answer
Connect the pan to the negative electrode.
Reason — The article to be electroplated is always placed at the cathode, during electrolytic reaction, the metal is always deposited at the cathode by gain of electrons.
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