Question

A 4.0M (concentration) copper(2) chloride solution was electrolysed using carbon electrodes.write the cathode half-reaction

Answer 1

The half-reaction at the cathode would be:

Cu2+(aq) + 2e- -> Cu(s)

This reaction represents the reduction of copper(II) ions in solution to form solid copper metal, which would plate out onto the cathode electrode.

Answer 2

Write the anode half -reaction

Answer 3

At the anode, chloride ions (Cl-) will undergo oxidation. The half-reaction at the anode would be:

2Cl- (aq) -> Cl2 (g) + 2e-

This reaction represents the oxidation of chloride ions to produce chlorine gas.