Chemistry
Starting from aq. copper (II) sulphate solution, give equations for the reactions at the cathode and anode during electrolysis of aq. CuSO4 using active copper electrodes.
Electrolysis
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Answer
Dissociation of aq. CuSO4 :
CuSO4 ⇌ Cu2+ + SO42-
H2O ⇌ H1+ + OH1-
Electrode reaction:
Reaction at Cathode:
Cu2+ + 2e- ⟶ Cu [Product : Copper metal]
Reaction at anode:
Cu – 2e- ⟶ Cu2+ [Product : Nil , Cu2+ ions ]
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