The Effect of Pressure Changes on Equilibrium (AQA GCSE Chemistry Combined Science): Flashcards

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The Effect of Pressure Changes on Equilibrium
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Pressure changes affect equilibrium in reactions with...

Gases

Which principle: equilibrium shifts to counteract pressure changes?

Le Chatelier's Principle

Increasing pressure shifts equilibrium towards side with...

Fewer moles of gas

Decreasing pressure shifts equilibrium towards side with...

More moles of gas

Pressure change effect when equal moles of gas on both sides

No effect on equilibrium

Moles on left: N2(g)+3H2(g)⇌2NH3(g)N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)

4 moles

Moles on right: N2(g)+3H2(g)⇌2NH3(g)N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)

2 moles

Ammonia production: increased pressure shifts equilibrium...

To the right (fewer moles)

Effect of increased pressure on ammonia production

Increases ammonia production

Ammonia production: decreased pressure shifts equilibrium...

To the left (more moles)

Explore AQA GCSE Chemistry Combined Science Revision Notes by Topics

Rate of Reaction

Reversibility & Equilibrium

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Rate of Reaction

Reversibility & Equilibrium

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Rate of Reaction

Reversibility & Equilibrium

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Rate of Reaction

Reversibility & Equilibrium

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