Equilibrium (AQA GCSE Chemistry): Flashcards
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Equilibrium definition
Equilibrium definition
State where forward & backward reaction rates are equal
System needed for equilibrium
System needed for equilibrium
Closed system
Reaction rates at equilibrium
Reaction rates at equilibrium
Forward rate equals backward rate
Do reactions continue at equilibrium?
Do reactions continue at equilibrium?
Yes, both continue but balance each other
Concentrations at equilibrium
Concentrations at equilibrium
Stay constant
Must amounts be equal at equilibrium?
Must amounts be equal at equilibrium?
No - only rates must be equal, not amounts
Equilibrium to the left
Equilibrium to the left
More reactants than products
Equilibrium to the right
Equilibrium to the right
More products than reactants
Equilibrium in the middle
Equilibrium in the middle
Roughly equal amounts of reactants & products
Observable sign: colour
Observable sign: colour
Colour changes stop
Observable sign: gas volume
Observable sign: gas volume
Becomes steady
Observable sign: temperature
Observable sign: temperature
Becomes constant