IB Chemistry R2.3 Notes
This page contains our IB Chemistry notes for R2.3. By reading each one of these notes, you will fully cover the content for IB Chemistry 'Extent of change'.
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Equilibrium
In Topic R1.1 you learned about reaction kinetics and in Topic R2.2 you learned about reaction rate. As mentioned in those topics, once a reaction is complete, it reaches a state of equilibrium.
Equilibrium is defined as the position of a reaction in which the concentration of both the products and reactants remains constant. The position of equilibrium varies for every reaction, as in some it lies closer to the reactants and in others closer to the products.
There are a few important properties of equilibrium:
- It can only be obtained in a closed system. This means the reactants and products can't exit into the surroundings.
- There are no overall changes in concentration.
- The concentrations of reactants and products are not necessarily the same.
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