Learning objective
(HT only) Predict that increasing pressure favours the side of a gaseous equilibrium with fewer molecules of gas.
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Topic
Reversible reactions and dynamic equilibrium
Subtopic
The effect of pressure changes on equilibrium (HT only)
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Quick explanation
(HT only) Predict that increasing pressure favours the side of a gaseous equilibrium with fewer molecules of gas
- This point belongs to Reversible reactions and dynamic equilibrium, especially The effect of pressure changes on equilibrium (HT only).
- You need to be able to (HT only) Predict that increasing pressure favours the side of a gaseous equilibrium with fewer molecules of gas.
- The key ideas to know are pressure and HT only.
- 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 The effect of pressure changes on equilibrium (HT only) to exam-style questions, flashcards, and revision notes for Reversible reactions and dynamic equilibrium.
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What should you know about (HT only) Predict that increasing pressure favours the side of a gaseous equilibrium with fewer molecules of gas?
Direct answer
In Chemistry, this page helps you answer questions about (HT only) Predict that increasing pressure favours the side of a gaseous equilibrium with fewer molecules of gas within Reversible reactions and dynamic equilibrium. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are Le Chatelier's Principle and Equilibrium Shift.
Key terms
- Le Chatelier's Principle: The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.
- Equilibrium Shift: The movement of the position of equilibrium in response to changes in concentration, temperature, or pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.
Common trap
Misunderstanding Pressure Effects: Remember that increasing pressure shifts the equilibrium towards the side with fewer gas molecules, which may not necessarily increase the reaction rate.
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Open revision notesRelated learning objectives
- Define a reversible reaction as a reaction in which products can react to make the original reactants.
Reversible reactions
- Identify the forward reaction and reverse reaction in a reversible reaction.
Reversible reactions
- Use the reversible reaction symbol in equations.
Reversible reactions
- Describe examples of reversible reactions such as hydrated copper sulfate and anhydrous copper sulfate.
Reversible reactions
- Describe thermal decomposition of ammonium chloride as a reversible reaction example.
Reversible reactions