What does Le Chatelier's Principle describe when a system at equilibrium is disturbed?

Le Chatelier's Principle states that if an external change is applied to a system at equilibrium, the system will respond by adjusting in a way that counteracts that disturbance. This means that the equilibrium will shift to either the left or the right, depending on the nature of the disturbance — whether it is a change in concentration, temperature, pressure, or volume.

For example, if the concentration of reactants is increased, the equilibrium will shift towards the products to reduce the concentration of that reactant. Similarly, if the temperature of an exothermic reaction is raised, the system will favor the endothermic direction to absorb the excess heat.

This principle is fundamental in chemical dynamics, as it describes the natural tendency of a system to restore balance in response to external changes, thus highlighting the dynamic nature of chemical equilibria. It does not imply that the system will remain unchanged or produce only gases, nor does it guarantee a complete reaction, as these statements do not align with the principle’s definition and application.