Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Reversibility and dynamic equilibria
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →Explain, in terms of particle behaviour, why the concentrations of reactants and products remain constant in a sealed container when a reversible reaction has reached dynamic equilibrium.
Question 2
5 marks · Hard
Answer and see the solution →A reversible reaction between gases takes place in a sealed container.
(a)[2 marks]State two characteristics of the system when it has reached dynamic equilibrium.
(b)[3 marks]Explain what would happen to the amount of if the pressure on the system is increased, and relate your answer to the number of moles of gas on each side of the equation.
Question 3
2 marks · Hard
Answer and see the solution →Write a balanced symbol equation for the reversible thermal decomposition of ammonium chloride, including the correct symbol for a reversible reaction.