Changing the temperature
1 mark · EasyIn a reversible reaction where the forward reaction is endothermic, what effect does decreasing the temperature have on the direction of equilibrium?
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It shifts to favour the exothermic direction (the reverse reaction).
Also accept: Shifts to favour the reverse reaction; Favours the exothermic direction
Common mistakes: Says it favours the forward reaction
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Marking points
B1 · 1 mark · Correctly states that equilibrium shifts to favour the exothermic direction or the reverse reaction.
Worked solution
Decreasing temperature shifts equilibrium in the exothermic direction, which is the reverse reaction if the forward is endothermic.