Course review

2.3 Extent of chemical change

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Learning objective

2.3.1—Dynamic equilibrium

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• Forward rate = backward rate (closed system) • Describe physical and chemical systems at equilibrium

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Learning objective

2.3.2—Equilibrium law

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• K determined from stoichiometry • Deduce K expressions for homogeneous reactions

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Learning objective

2.3.3—Equilibrium constant (K)

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• Magnitude indicates extent of reaction • Temperature dependent • Kreverse = 1/Kforward • Interpret K << 1, K < 1, K = 1, K > 1, and K >> 1

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Learning objective

2.3.4—Le Châtelier's principle

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• Predict effects of changes in concentration, temperature, pressure • Include effects on K and equilibrium composition

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