In a reaction, the total energy needed to break the bonds in the reactants is 760 kJ/mol. The total energy released when bonds form in the products is 590 kJ/mol.
Calculate the overall energy change of the reaction and explain why the products are at a higher energy than the reactants on a reaction profile.
85 exam-style questions on AQA GCSE Chemistry 5.1 Exothermic and endothermic reactions, covering 5.1.1 Energy transfer during exothermic and endothermic reactions, 5.1.2 Reaction profiles, and 5.1.3 The energy change of reactions. Each one has a worked solution and a mark scheme showing where the marks go.