Using a V batteries.
5.
Switch on an electric
6. Observe the changes.
Ammeter/Torch bulb
Anode (+ve)
Cathode (-ve)
H
OH
Cu2+
Cu
Graphite
OH-
H+
SO.
CuSO
solution
SO2
Cu2+
Figure 3.15 Electrolysis of Cuso, solution
Questions
1. What happens to the colour of the solution? Explain your observation.
2. What is observed at the cathode?
3. Identify reduction electrode and oxidation electrode.
4. Write down the cathodic reaction and anodic reaction.
5. What is observed as the voltage of the batteries increase? Give reason.
6. Write the equations showing the dissociation of electrolyte.