A reaction at equilibrium is exothermic in the forward direction. What happens to the position of equilibrium when the temperature is raised?
Answer and explanation
Correct answer: A. It shifts toward the reactants, because the reverse reaction is endothermic and absorbs the added heat
- Step 1: Le Chatelier's principle says the system opposes a change.
- Step 2: Heating is opposed by the endothermic reaction, which absorbs heat.
- Step 3: The forward reaction is exothermic, so the reverse is endothermic and is favoured.
Answer
shifts toward the reactants.
Why not the others: Heat released by the forward reaction would add to the disturbance; temperature does change the position and K; pressure is not the issue.
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