A reaction: , has kJ mol and J K mol. Describe the effect of temperature on the feasibility of this reaction. In your answer, include the Gibbs equation, the signs of and , and an explanation of how the sign of changes with temperature.
CAIE A Level Chemistry 9701 · Chemical energetics
Chemical energetics: describe question
Describe7 marksChallenge
How this question is marked
7 marks, so the mark scheme is looking for about 7 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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