Nitrogen Dioxide/Tetroxide Demonstration
A visual demonstration of Le Chatelier’s principle involves the dynamic equilibrium between nitrogen dioxide and dinitrogen tetroxide gases. Fill a gas syringe with an equilibrium mixture of brown NO2 and colourless N2O4. The effect of pressure is shown by compressing the mixture and observing the change in colour intensity. Similarly, the effect of temperature can be shown by heating or cooling the mixture and observing the colour change.
Topic:
- Physical Chemistry
- Equilibrium
Strategy:
- Representations
- Demonstration and Simulation
- Technology
- Online and e-Resources
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