The Effect of Pressure Changes on Equilibrium (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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What types of reactions are affected by pressure changes?
What types of reactions are affected by pressure changes?
Reactions involving gases
What principle explains pressure effects on equilibrium?
What principle explains pressure effects on equilibrium?
Le Chatelier's Principle
Where does equilibrium shift when pressure increases?
Where does equilibrium shift when pressure increases?
Towards the side with fewer moles of gas
Where does equilibrium shift when pressure decreases?
Where does equilibrium shift when pressure decreases?
Towards the side with more moles of gas
Effect of pressure if equal moles on both sides?
Effect of pressure if equal moles on both sides?
No effect on equilibrium position
Why does equilibrium shift to fewer moles at high pressure?
Why does equilibrium shift to fewer moles at high pressure?
To reduce pressure by decreasing gas molecules
Moles on left:
Moles on left:
4 moles
Moles on right:
Moles on right:
2 moles
Effect of increasing pressure on ammonia production?
Effect of increasing pressure on ammonia production?
Shifts right, increases production
Effect of decreasing pressure on ammonia production?
Effect of decreasing pressure on ammonia production?
Shifts left, reduces production