alleryWhich half-reaction shows copper ions being reduced during plating?
ACu2+ → Cu3+ + e−
BCu + e− → Cu−
CCu → Cu2+ + 2e−
DCu2+ + 2e− → Cu
Answer & Solution
Correct answer: D. Cu2+ + 2e− → Cu
Copper ions gain two electrons to form copper metal.
Keep practising Electrolysis
Browse all Electrolysis questions for ICSE Class 10, or explore more Chemistry topics.
Related questions
Match each ion with its preferential discharge order at electrodes:Match each electrochemical electroplating rule with its requirement:Match each industrial electrolytic extraction with its electrolyte and components:Match each electrolytic cell term with its definition:Cu electrodes transfer Cu/Cu2+ only. Mass changes?Aqueous CuSO4 uses Pt electrodes. How does its acidity change?With Pt electrodes, how does aqueous CuSO4's blue colour change?A plating cell has an inert anode. What needs replenishing?