Effect of Concentration & Pressure (AQA A-Level Chemistry): Flashcards
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Practise the cards
10 cards from this deck
What is concentration?
What is concentration?
Amount of reactant particles in a given volume
Effect of increasing concentration on reaction rate
Effect of increasing concentration on reaction rate
Increases the rate of reaction
Why does higher concentration increase reaction rate?
Why does higher concentration increase reaction rate?
More particles → more collisions → more successful reactions
What happens to M-B curve shape at higher concentration?
What happens to M-B curve shape at higher concentration?
Remains the same (most probable energy unchanged)
What happens to M-B curve peak at higher concentration?
What happens to M-B curve peak at higher concentration?
Higher (more molecules) but at same energy level
What happens to M-B curve area at higher concentration?
What happens to M-B curve area at higher concentration?
Increases (represents larger number of molecules)
How significant is concentration effect vs temperature effect?
How significant is concentration effect vs temperature effect?
Less significant than temperature
Effect of increasing pressure on gaseous reactions
Effect of increasing pressure on gaseous reactions
Increases rate (like increasing concentration)
How does pressure affect gas particle concentration?
How does pressure affect gas particle concentration?
Compresses particles into smaller volume
Common mechanism for concentration & pressure effects
Common mechanism for concentration & pressure effects
More particles in same space → more collisions