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Dynamic equilibrium and Le Chatelier’s principle · A Level Chemistry · Courselo

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Chemistry
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Physical chemistry: energetics, kinetics and equilibria

Dynamic equilibrium and Le Chatelier’s principle

Physical chemistry: energetics, kinetics and equilibria · Lesson 6 of 10

Lesson 6 of 10

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Unit 2

Physical chemistry: energetics, kinetics and equilibria

10 lessons · 16 h 45 min of study

Enthalpy changes and calorimetry1 h 30 min of study
Hess cycles, bond enthalpies and lattice energetics2 h of study
Entropy and Gibbs free energy1 h 45 min of study
Reaction rates and collision theory1 h 15 min of study
Rate equations, orders, mechanisms and Arrhenius treatment2 h 30 min of study

This unit is ≈20% of the Chemistry, across 10 lessons. Full syllabus

Lesson 6 of 10 · Physical chemistry: energetics, kinetics and equilibria

Dynamic equilibrium and Le Chatelier’s principle

3 quick checks≈2% of the testFoundational: Foundational: the groundwork the rest of the unit builds on

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By the end you’ll be able to

Define a reversible reaction and dynamic equilibrium in terms of equal forward and reverse reaction rates in a closed system.
Recognise when an equilibrium is established and distinguish equilibrium from completion of reaction.
Apply Le Chatelier’s principle to predict the effect of changing concentration, pressure or temperature on the position of equilibrium.

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Adaptive questions on dynamic equilibrium and Le Chatelier’s principle.

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Equilibrium constants Kc and Kp1 h 45 min of study

Acids, bases and pH calculations1 h 45 min of study

Weak acids, buffers and titration curves2 h of study

Solubility product and precipitation equilibria1 h of study

Explain equilibrium shifts for gaseous equilibria in terms of changes in total amount of gaseous substance and opposing imposed change.

Predict the effect of catalysts on the time taken to reach equilibrium and explain why catalysts do not change the equilibrium position.

Interpret experimental or industrial conditions in terms of equilibrium yield and compromise conditions.

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