Chemistry · May / June 2020 · Paper 12 · Question 16
5070Electrolysis
Which arrangement is used to electroplate copper onto a steel key?
- Aelectrolyte: aqueous copper(II) sulfate; anode (positive electrode): piece of pure copper; cathode (negative electrode): steel key
- Belectrolyte: aqueous copper(II) sulfate; anode (positive electrode): steel key; cathode (negative electrode): piece of pure copper
- Celectrolyte: dilute sulfuric acid; anode (positive electrode): piece of pure copper; cathode (negative electrode): steel key
- Delectrolyte: dilute sulfuric acid; anode (positive electrode): steel key; cathode (negative electrode): piece of pure copper
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Correct answer: A. electrolyte: aqueous copper(II) sulfate; anode (positive electrode): piece of pure copper; cathode (negative electrode): steel key
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