Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
The effect of concentration
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →The following reversible reaction is at equilibrium in a sealed container:
State and explain the effect on the position of equilibrium if additional Y(g) is added to the system.
Question 2
5 marks · Hard
Answer and see the solution →The reaction below is at equilibrium in a closed vessel:
A student increases the concentration of P(g).
(a)[1 mark]Predict the effect on the position of equilibrium. State your answer as 'left', 'right' or 'no change'.
(b)[2 marks]Explain your answer in (a), referring to the effect of changing concentration.
(c)[2 marks]If instead some M(g) is removed from the vessel, what effect would this have on the equilibrium position? State your answer and explain.
Question 3
2 marks · Hard
Answer and see the solution →For the equilibrium reaction below:
Explain, in terms of concentration, what happens to the position of equilibrium if some B(g) is removed from the mixture.