The Effect of Temperature Changes on Equilibrium (AQA GCSE Chemistry Combined Science): Flashcards
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Le Chatelier's Principle & temp change
Le Chatelier's Principle & temp change
Equilibrium shifts to counteract the temperature change
Exothermic reaction
Exothermic reaction
A reaction that releases heat
Endothermic reaction
Endothermic reaction
A reaction that absorbs heat
Exothermic reaction + increased temp: equilibrium shift
Exothermic reaction + increased temp: equilibrium shift
Shifts left (towards reactants) to absorb extra heat
Exothermic reaction + decreased temp: equilibrium shift
Exothermic reaction + decreased temp: equilibrium shift
Shifts right (towards products) to release heat
Endothermic reaction + increased temp: equilibrium shift
Endothermic reaction + increased temp: equilibrium shift
Shifts right (towards products) to absorb added heat
Endothermic reaction + decreased temp: equilibrium shift
Endothermic reaction + decreased temp: equilibrium shift
Shifts left (towards reactants), as less heat available
Effect of raising temperature on equilibrium
Effect of raising temperature on equilibrium
Favours the endothermic direction (to absorb heat)
Effect of lowering temperature on equilibrium
Effect of lowering temperature on equilibrium
Favours the exothermic direction (to release heat)
Ammonia formation reaction type
Ammonia formation reaction type
Exothermic
Ammonia formation + increased temp effect
Ammonia formation + increased temp effect
Equilibrium shifts left, reducing ammonia production
Ammonia formation + decreased temp effect
Ammonia formation + decreased temp effect
Equilibrium shifts right, producing more ammonia