Conditions & Equilibrium
Chemistry: Cambridge International GCSE Supplement, topic 6.3.2
Conditions and Equilibrium
Changing the conditions in a reversible reaction affects the position of equilibrium.

Changing conditions
- The conditions determine the relative quantities of the different reactants and products in a reaction at equilibrium.

Le Chatelier's principle
- Le Chatelier’s principle says that if any of the conditions of a reversible reaction at equilibrium are changed, the closed system will adapt to counteract whatever has changed.
- This principle is used to predict the outcome of changes imposed on a system at equilibrium.
Test yourself on Conditions & Equilibrium
What happens to a system at equilibrium when one of its conditions is changed, according to Le Chatelier's principle?
What determines the relative amounts of the substances involved in a reaction at equilibrium?