Le Chatelier’s principle

Le Chatelier’s principle states that when a change is made to the conditions of a system at equilibrium, the system responds to counteract the change.

Le Chatelier’s principle gives a way to predict a shift: when conditions affecting an equilibrium change, the position shifts to counteract that change. After the shift, a new dynamic equilibrium can be established. The forward and reverse rates are equal again, but the mixture has different concentrations.