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Objectives: CHAPTER 14 After having read and studied chapter 14,in Chemistry by Chang, the student will be able to: 1. Apply stoichiometry to an equilibrium mixture. Given the starting amounts of reactants and the amount of one substance at equilibrium, find the equilibrium composition. 2. Writing equilibrium-constant expressions. Given the chemical equation, write the equilibrium-constant expression. 3. Obtaining an equilibrium constant from reaction composition. Given the equilibrium composition, find Kc 4. Using the reaction quotient. Given the concentration of substances in a reaction mixture, predict the direction of the reaction 5. Use one equilibrium concentration to solve for another. Given Kc and all concentrations of substances but one in an equilibrium mixture, calculate the concentration of this one substance. 6. Solving equilibrium problems. Given the starting composition and Kc of a reaction mixture, calculate the equilibrium composition. 7. Applying Le Chatelier’s principle. Given a reaction, use Le Chatelier’s principle to decide the effect of adding or removing a substance; changing the pressure, or changing the temperature.
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