Question

5. Complete the table below, identifying the products formed during the electrolysis of the

molten salts. Sodium chloride has been done for you.

Name of the Salt. Product at the Cathode. Product at the Anode

Sodium Chloride Sodium. Chlorine

Lead Bromide

Potassium iodide

Copper Chloride

Answer 1

In sodium chloride during electrolysis

Na+ moves to cathode

Cl- moves to anode

In lead bromide

Pb+2 moves to cathode

2Br- moves to anode

In potassium iodide

K+ moves to cathode

I- moves to anode

In copper chloride

Cu +2 moves to cathode

Cl2 moves to anode

so in fact which undergo oxidation moves to anode

and which undergo reduction move to cathode