O-LevelChemistryElectrolysis5070/11 · May/June 2020 · Q161 Mark
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
✓ Correct answer
A: electrolyte: aqueous copper(II) sulfate, anode (positive electrode): piece of pure copper, cathode (negative electrode): steel key
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