Cobalt Chloride Equilibrium: Influence of Concentration and Temperature

This demonstration illustrates LeChatelier’s Principle: If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change. Starting with a red-pink solution of aqueous cobalt (II) chloride, students observe color changes in an equilibirum system due to changes in concentration of chloride ions or cobalt (II) ions. Changes to the temperature of the equilibrium system will change the color of the solution.
Cobalt Chloride Equilibirum Overview Slide Demo


Common Ion Effect


Copper-Ammonia Complex

Copper Hydroxide

Le Chatelier's Principle - Copper Ion

Le Chatelier Green

