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Hydrogen BalloonLimiting ReactantNO2/N2O4 Equilibrium Le Chatelier's Principle - Copper Ion

Hydrogen Balloon - In addition to its obvious crowd appeal, detonating a hydrogen balloon can be used to demonstrate combination, redox, formation, and exothermic reactions and activation energy.

Limiting Reactant - This demonstration is usually used in a General Chemistry course when the concept of limiting reactant is being introduced.

NO2/N2O4 Equilibrium - Heating or cooling flasks of NO2 and N2O4 shifts the equilibrium between these two species. This demonstration can be used when the concept of the equilibrium concept is being introduced to illustrate the temperature dependence of the equilibrium constant.

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This site has been developed primarily as a resource for UO chemistry instructors, but high school and college chemistry and physical science instructors can find a lot of useful information here too. Come on in and look around! Let's do some demos. But careful and WEAR YOUR GOGGLES!
"Do not do demos unless you are an experienced chemist!"

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© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group