Question

Which electrode—anode or cathode—is the oxidising electrode? Why?

State which electrode- anode or cathode is the oxidising electrode. Give a reason for the same.

Answer 1

The anode is the oxidising electrode. It is a positively charged electrode, and oxidation means the loss of electrons. Thus, electrons lost during oxidation are deposited at the anode, which is the site of oxidation.

Answer 2

The anode slowly dissolves, but the colour of copper sulphate does not change. The copper anode generates Cu²⁺ ions, which then enter the CuSO₄ solution. It accepts electrons to form Cu²⁺.