The table shows some information from a reaction profile.
| Energy of reactants | Energy at the top of the peak | Energy of products |
|---|---|---|
| 40 kJ | 150 kJ | 95 kJ |
Which row describes the reaction?
| Type of reaction | Overall energy change (kJ\mathrm{kJ}kJ) | |
|---|---|---|
| A | exothermic | 55 |
| B | endothermic | 55 |
| C | endothermic | 110 |
| D | exothermic | 110 |
Row A
Row B
Row C
Row D
51 exam-style questions on OCR GCSE Chemistry 3.2 Energetics, covering 3.2.1 Exothermic and endothermic reactions and reaction profiles and 3.2.2 Calculating energy change from bond energies. Each one has a worked solution and a mark scheme showing where the marks go.