Effects on the Chemical Equilibrium

Written by Paul Kaeser

Contents	effects of concentration, pressure and temperature changes on chemical equilibrium; ammonia synthesis
Suitable for	Gymnasium level
Prerequisites	chemical equilibrium, law of mass action, Avogadro's law, ions
Time	3 ½ lessons
Material	see instructions below

What's it about?

The effects of concentration changes on a chemical equilibrium will be investigated through student experiments that study the formation of a complex of Fe³⁺ and SCN‾ ions. The law of mass action is used to predict the effects which then are verified experimentally. Thereafter, Le Châtelier's principle is explained as well as the influence of pressure and temperature on equilibrium. Finally, the theory is applied to the example of industrial ammonia synthesis.

Downloads

Effects on the Chemical Equilibrium
	Instructions for the teacher	PDF [118 KB]
	Handout for the students	PDF [335 KB] · Word [2 MB]
	Film “Ammonia”	wmv [24 MB]
	Questions about the film	PDF [61 KB] · Word [84 KB]