Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
The position of equilibrium
20 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →The equilibrium below is set up in a sealed container: \[ \ce{2X(g) <=> Y(g) + 2Z(g)} \] The forward reaction is exothermic. State and explain what will happen to the position of equilibrium if the temperature is increased.
Question 2
5 marks · Hard
Answer and see the solution →In a sealed container at equilibrium, the following reaction occurs:
The forward reaction is exothermic.
(a)[2 marks]State how an increase in pressure will affect the position of equilibrium. Explain your answer.
(b)[2 marks]Describe what happens to the position of equilibrium if the temperature is decreased. Explain your answer.
(c)[1 mark]If some AB(g) is removed from the container, what will happen to the amounts of A2(g), B2(g), and AB(g) as the system re-establishes equilibrium? Explain.
Question 3
2 marks · Hard
Answer and see the solution →For the reversible reaction in a sealed container: \[ \ce{C(g) <=> D(g) + E(g)} \] Give one change that would cause the position of equilibrium to shift to the right. Explain your answer.