The reversible reaction is shown.
carbon monoxide + water vapour ⇌ \rightleftharpoons\,⇌ carbon dioxide + hydrogen
A sealed flask initially contains only carbon dioxide and hydrogen under conditions in which the reversible reaction takes place.
What happens when the reaction begins?
More carbon dioxide and hydrogen begin to form.
Carbon monoxide and water vapour begin to form.
Carbon monoxide and hydrogen begin to form.
Carbon dioxide and water vapour begin to form.
109 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.