**I. Nature of Chemical Equilibrium** A. Free energy, G vs. Progress of reaction B. Reaction quotient ##1. Partial pressure (gas) ##2. Concentration (solute) C. Relationship between K and Q **II. Meaning of K** A. Concentration of products at equilibrium B. K > 1 C. Relationship between ΔG° and the magnitude of K **III. Relationship Between Equilibrium Expressions** **IV. External Effects on K** A. Principle of Le Châtelier B. Adding and removing reagents ##1. Adding more reactant ##2. Adding more product ##3. Removing product

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