A reversible reaction is started by mixing the reactants in a sealed flask. What are the rates of the two reactions at the moment the reactants are mixed?
The forward rate is zero and the reverse rate is at its highest
The forward and reverse rates are both zero at this moment
The forward and reverse rates are equal to each other
The forward rate is at its highest and the reverse rate is zero
40 exam-style questions on AQA GCSE Chemistry 6.2 Reversible reactions and dynamic equilibrium, covering 6.2.1 Reversible reactions, 6.2.2 Energy changes and reversible reactions, 6.2.3 Equilibrium, 6.2.4 The effect of changing conditions on equilibrium, 6.2.5 The effect of changing concentration, 6.2.6 The effect of temperature changes on equilibrium, and 6.2.7 The effect of pressure changes on equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.