Le Chatelier's principle: the effect of concentration on equilibrium

Description

The reversible reaction between bismuth(III) oxychloride and bismuth(III) chloride is demonstrated in this experiment.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
le-chateliers-principle-t...



Apparatus Chemicals

Eye protection - safety goggles

Beakers (25, 50, 100, 250, 600 and 2000 cm3), 1 of each (Note 1)

Measuring cylinders (10 cm3), 4 & (50 or 100 cm3), 2 (Note 2)

Boiling tube

Stirring rod

Top pan balance, accurate to +/- 0.1 g

The quantities given are for one demonstration:

Bismuth(III) oxychloride (OXIDISING, IRRITANT), 2.6 g

Concentrated hydrochloric acid (CORROSIVE), 83 cm3

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

 


Read our standard health & safety guidance



Beaker number Size of beaker / cm3 Volume of water in beaker / cm3 Volume of conc. HCl next to beaker / cm3
1 25 12 2
2 50 25 2
3 100 50 3
4 250 125 7
5 600 300 16
6 2000 1000 50

 


 




The reversible reaction between bismuth(III) oxychloride and bismuth(III) chloride is demonstrated in this experiment.

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.