1Learning objective
2.3.1—Dynamic equilibrium
New• Forward rate = backward rate (closed system)
• Describe physical and chemical systems at equilibrium
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Start with the concept explanation, then practise to create mastery evidence.
2Learning objective
2.3.2—Equilibrium law
New• K determined from stoichiometry
• Deduce K expressions for homogeneous reactions
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Start with the concept explanation, then practise to create mastery evidence.
3Learning objective
2.3.3—Equilibrium constant (K)
New• 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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Start with the concept explanation, then practise to create mastery evidence.
4Learning objective
2.3.4—Le Châtelier's principle
New• Predict effects of changes in concentration, temperature, pressure
• Include effects on K and equilibrium composition
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Start with the concept explanation, then practise to create mastery evidence.