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Equilibrium constants and Le Chatelier's principle
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Reversible reactions and dynamic equilibrium

Reversible reactions and dynamic equilibrium

Concentration-time and rate-time graphs for a reversible reaction showing constant concentrations and equal forward and reverse rates at equilibrium A reversible reaction can proceed in both directions, such as N2O4(g)⇌2NO2(g)\text{N}_2\text{O}_4\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)}N2​O4​(g)⇌2NO2​(g). Dynamic equilibrium is reached only in a closed system, so reactants and products cannot escape.

Equilibrium constants and Le Chatelier's principle Lesson

  1. A Level
  2. /Chemistry
  3. /Equilibrium constants and Le Chatelier's principle

Step-by-step lessons covering Edexcel A Level Chemistry Equilibrium constants and Le Chatelier's principle for A Level Chemistry. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.