During the electrolysis of copper (Ⅱ) sulphate solution using platinum as cathode and carbon as anode “State the change noticed in the electrolyte”.

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Solution

The blue colour of the solution becomes lighter as electrolysis proceeds and becomes colourless at the end.This is because copper ions (blue colour)get discharged at the cathode.
Reaction at the cathode:
\(Cu^{2+}+2e^-\rightarrow Cu\)

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(a) Give reason: The electrolysis of acidulated water is considered to be an example of catalysis.

(b) During the electrolysis of copper [II] sulphate solution using platinum as cathode and carbon as anode

(i) State what you observe at the cathode and at the anode

(ii) State the change noticed in the electrolyte

(iii) Write the reactions at the cathode and at the anode.

during the electrolysis of copper [II] sulphate solution using platinum as cathode and carbon as anode :

1) state what you observe at the cathode and at the anode.

2)state the change noticed in the electrolyte .

3)write the reaction at the cathode and at the anode.

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