Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Changing the temperature
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →A reversible reaction is at equilibrium. The forward reaction is exothermic. Explain what happens to the position of equilibrium if the temperature is increased.
Question 2
5 marks · Hard
Answer and see the solution →The following reversible reaction is at equilibrium:
(a)[2 marks]State whether the forward reaction is exothermic or endothermic. Explain how you know.
(b)[3 marks]If the position of equilibrium shifts to the right when the temperature is changed, is the temperature being increased or decreased? Explain your reasoning using the ΔH value.
Question 3
2 marks · Hard
Answer and see the solution →For the following equilibrium reaction:
State how increasing the temperature will affect the position of equilibrium. Give your answer for both cases: (i) forward reaction is exothermic; (ii) forward reaction is endothermic.