Use Le Chatelier's principle to predict the effect of concentration changes.

In the subtopic Equilibrium and Le Chatelier's principle, this AQA A-Level Chemistry 7405 learning objective focuses on use Le Chatelier's principle to predict the effect of concentration changes. It belongs to Chemical equilibria, Le Chatelier's principle and Kc, so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include Le Chatelier, concentration. Concentration change. means a change in the amount of reactants or products in a reaction mixture, which can shift the position of equilibrium according to Le Chatelier's principle Avoid the mistake of students often believe that increasing the concentration of reactants will always lead to a shift in equilibrium towards the products without considering the system's response; instead, to fix this, remember that according to Le Chatelier's principle, increasing the concentration of reactants causes the system to shift towards the products to counteract the change. This shift results in an increase in product formation until a new equilibrium is established, which may not always be significant if the reaction is already product-favored For exam answers, when the concentration of a reactant is increased, the system will shift to the right to reduce this concentration