Which statement correctly describes a chemical system that has reached dynamic equilibrium in a closed system?
The concentration of reactants must equal the concentration of products.
The rates of the forward and reverse reactions are equal, so the concentrations of reactants and products remain constant over time.
All chemical processes have stopped, and no further reactions take place.
The rate of the forward reaction is greater than the rate of the reverse reaction.
25 exam-style questions on OCR GCSE Chemistry Equilibria. Each one has a worked solution and a mark scheme showing where the marks go.