Learning objective
Use Le Chatelier's principle to predict the effect of pressure changes.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Flashcards
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Questions
Topic
Chemical equilibria, Le Chatelier's principle and Kc
Subtopic
Equilibrium and Le Chatelier's principle
Study support
Understand this objective
Quick explanation
Use Le Chatelier's principle to predict the effect of pressure changes
- This point belongs to Chemical equilibria, Le Chatelier's principle and Kc, especially Equilibrium and Le Chatelier's principle.
- You need to be able to use Le Chatelier's principle to predict the effect of pressure changes.
- The key ideas to know are Le Chatelier and pressure.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Equilibrium and Le Chatelier's principle to exam-style questions, flashcards, and revision notes for Chemical equilibria, Le Chatelier's principle and Kc.
Quick student answer
What will happen to the position of equilibrium when the pressure is increased in the following reaction? N2(g) + 3H2(g) ⇌ 2NH3(g)
Direct answer
The equilibrium shifts to the right.
Key terms
- Dynamic Equilibrium: A state of balance in a reversible reaction where the rate of the forward reaction equals the rate of the backward reaction.
- Mole Ratio: The ratio of the amounts of reactants and products in a balanced chemical equation.
Common trap
Ignoring the number of moles of gas: Always count the moles of gas on both sides of the equation to apply Le Chatelier's principle correctly.
Related questions
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Flashcard prompts
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Revision tools
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Practice Questions0 linked questions
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Define dynamic equilibrium in a closed system.
Equilibrium and Le Chatelier's principle
- Use Le Chatelier's principle to predict the effect of concentration changes.
Equilibrium and Le Chatelier's principle
- Use Le Chatelier's principle to predict the effect of temperature changes.
Equilibrium and Le Chatelier's principle
- Explain why catalysts do not change the position of equilibrium.
Equilibrium and Le Chatelier's principle
- Construct Kc expressions for homogeneous equilibria.
Equilibrium constant Kc