When a system is disrupted, such as by changes in concentration, temperature, or pressure, Le Chatelier's theory, commonly known as "Chatelier's principle" or "The Equilibrium Law," states that it will respond to restore a new equilibrium state.
The Le Chatelier theory is based on the observation of equilibria in chemical reactions.
It asserts that changes in the temperature, strain, volume, or concentration of a system will result in predictable and opposing changes in the system in order to reach a new equilibrium state.