What occurs to equilibrium when products are added to the system?

When products are added to a system at equilibrium, the principle of Le Chatelier suggests that the equilibrium will shift to counteract this change. Specifically, by increasing the concentration of the products, the system will respond by shifting the equilibrium position to favor the reactants.

This shift occurs as the reaction seeks to reduce the concentration of the added products. In essence, the system will attempt to re-establish a balance by converting some of the products back into reactants. Thus, the correct understanding is that the equilibrium shifts to the side of the reactants when products are added.

The Kc value, which represents the equilibrium constant, remains unchanged under constant temperature conditions, as it is specific to a given reaction at that temperature. Therefore, the adjustment to the system is a reaction to the change, rather than a change in the Kc value itself.