Write out half equations for the following reactions

Indicate which substance is being oxidised and which is being reduced

C(s) + O2(g) CO2(g)

Fe2O3(s) + 3CO(g) 3CO2(g) + 2Fe

Electrolysis of Copper Chloride

• GROUP PROBLEM:

• What is the formula for copper chloride?

• Which ion will travel to the cathode?

• Which ion will travel to the anode?

At the cathode:

Cu2+ + 2e- CuIs this an oxidation or reduction reaction?

At the anode

2Cl- - 2e- Cl2

Is this an oxidation or reduction reaction?

Try for yourself!

1. Set up the experiment as shown in the diagram below2. Observe what happens at each electrode3. Use your observations to complete your worksheet

50 ml copper chloride solution