6(iii)
Copper sulphate solution is electrolysed using copper electrodes.
(a) Which electrode [cathode or anode] is the oxidizing electrode? Why?
(b) Write the equation for the reaction occurring at the above electrode.
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(a) In the electrolysis of copper sulphate solution using copper electrodes the anode is the oxidizing electrode. Copper atoms lose electrons at the anode and go into the solution as copper ions. Thus, the anode causes oxidation, making it the oxidizing electrode.
(b) Cu ⟶ Cu+2 + 2e-