1.

During electrolysis of CuSO4 using platinum [cathode] and carbon [anode]:1. State what you observe at the cathode and anode.2. State the change noticed in the electrolyte3. Write the reactions at the cathode and anode.

Answer»

1. Cathode : Reddish brown deposition of copper occurs at cathode.

Anode : Colourless gas is evolved at anode.

2. On prolonged electrolysis, the blue electrolyte turns colourless. .

3. Cathode :  Cu2+   +  2e → Cu

   Anode :    OH — Ie → OH

                    4OH → 2H2O + O2 ↑ 



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