Skip to main content

Electrolysing molten lead(II) bromide

Description

This experiment demonstrates that conduction is only possible where lead(II) bromide is molten.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
electrolysing-molten-lead...



Apparatus Chemicals

Eye protection

The teacher will require:

Access to a fume cupboard

Porcelain crucibles, about 2.5 cm in diameter, 2

Graphite rod electrodes, about 15 cm long, 2

Rubber bung with two holes about 1 cm apart to fit the graphite rods

DC power supply adjustable to 12 V (Note 1)

Ammeter, 0-5 A, ideally a large demonstration model

Leads and crocodile clips

Pair of metal tongs

Large wooden board such as dissecting board

Lead(II) bromide (TOXIC), about 20 g

Universal indicator (FLAMMABLE), a few drops

Refer to Health & Safety and Technical notes section below for additional information.

 


 







Useful websites


Page last updated October 2015

This experiment demonstrates that conduction is only possible where lead(II) bromide is molten.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.