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Unformatted text preview: 1 Lecture 14 How pushy: Le Chateliers Principle Key Idea: The dynamic competition between reactants and products is sensitive to external perturbations. ( l ) c As we add concentrated HCl (aq), what will eventually happen? A. The solution will turn pink. B. The solution will turn blue. C. The solution will stay purple its at equilibrium. ( l ) c As we add water, what will eventually happen? A. Nothing will happen; water is not included in K c for aqueous solutions. B. The solution will turn pink. C. The solution will be a lighter shade of blue. Le Chteliers Principle A system in equilibrium subjected to a A system in equilibrium subjected to a stress will react in a direction that stress will react in a direction that tends to reduce the tends to reduce the stress. stress. [X [X i] (1) Changes in concentrations of reactants and products... N 2 (g ) + 3 H 2 (g) 2 NH 3 (g) Shifts right !...
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- Fall '08