The Effect of Temperature Changes on Equilibrium (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Le Chatelier's Principle: temp changes
Le Chatelier's Principle: temp changes
Equilibrium shifts to oppose the temp change
Exothermic reactions
Exothermic reactions
Release heat
Endothermic reactions
Endothermic reactions
Absorb heat
Exothermic + increase temp → shift direction?
Exothermic + increase temp → shift direction?
Left (towards reactants)
Exothermic + decrease temp → shift direction?
Exothermic + decrease temp → shift direction?
Right (towards products)
Endothermic + increase temp → shift direction?
Endothermic + increase temp → shift direction?
Right (towards products)
Endothermic + decrease temp → shift direction?
Endothermic + decrease temp → shift direction?
Left (towards reactants)
Ammonia formation: exo or endothermic?
Ammonia formation: exo or endothermic?
Exothermic
Ammonia formation + higher temp → effect?
Ammonia formation + higher temp → effect?
Shifts left, less ammonia produced
Ammonia formation + lower temp → effect?
Ammonia formation + lower temp → effect?
Shifts right, more ammonia produced
Raising temp favours which direction?
Raising temp favours which direction?
Endothermic direction (absorbs heat)
Lowering temp favours which direction?
Lowering temp favours which direction?
Exothermic direction (releases heat)