Q5. In the electrolytic refining of copper. (10 marks)
Which terminal of the power supply is connected to the impure copper
Write the equation for the reaction of the impure copper. (4 marks)
ili. What electrolyte is used? ( 4 marks)
6. A brass ring is to be electroplated with silver. (10 marks)
i. Which terminal of the battery would the brass ring be connected to? (
i. Name a suitable electrolyte for the electroplating. (3 marks)
Write the equation occurring at the plating electrode. (3 marks)
What material would the other electrode be made of? (2 marks)
Answers: 3
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Q5. In the electrolytic refining of copper. (10 marks)
Which terminal of the power supply is connec...
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