1. Electrolysis of lead(II) bromide

2. Electrolysis of lead(II) bromide
Give the formula of lead(II) bromide.
What type of bonding will lead(II) bromide have?
Draw a dot and cross diagram (showing outer electrons only) for lead(II) bromide.
Suggest the structure and therefore the properties that you expect lead(II) bromide to have.
Write a word and a balanced equation (including state symbols) for the formation of lead(II) bromide from lead and bromine.

3. During the demonstration
Describe your observations as lead(II) bromide is heated.
Describe your observations as an electric current is passed through the molten lead(II) bromide.
After the demonstration
Explain your observations as lead(II) bromide is heated.
Explain your observations as an electric current is passed through the molten lead(II) bromide.

4. After the demonstration
Explain your observations as lead(II) bromide is heated.
You should use the following key words:
energy separate oppositely strong attraction forces many electrostatic ions charged

5. Draw an annotated cross-section diagram to show what has happened during the electrolysis.

6. electrolysis video

7. Annotating the diagram
Use some of the following (once or more than once) to annotate the diagram:
Br- Pb2+ e-
anode (+ve) cathode (-ve) heat
molten lead(II) bromide bromine lead
Br2 Pb oxidised reduced
Tripod pipe clay triangle crucible bulb

8. Oxidation and reduction in electrolysis
Loss of Gain of Electrons is the lion says Electrons is Oxidation Reduction At the cathode (negative electrode) Pb2+ + 2e- Pb Pb2+ reduced At the anode (positive electrode) 2Br - Br2 + 2e- Br - oxidised