| 1. | A |
| 2. | C |
| 3. | D |
| 4. | B |
| 5. | C |
| 6. | D |
| 7. | A |
| 8. | C |
| 9. | C |
| 10. | B |
| 11. | |
| D | |
| 12. | |
  |
|
| 13. | |
  |
|
| 14. | |
 |
|
| 15. | |
 |
|
| 16. | |
| B | |
| 17. | |
| A | |
| 18. | |
a) |
|
| i) | Activation energy = 70kJ mol-1 Enthalpy change = +40 kJ mol-1 |
| ii) | Activation energy = 30kJ mol-1 Enthalpy change = -40 kJ mol-1 |
| b) | Activation energy would be reduced by use of a catalyst. |
| 19. | |
| a) | H+ ion appears on both reactant and product side – i.e. not used up. |
| b) | |
 |
|
| 20. | |
| B | |
| 21. | |
| D | |
| 22. | |
| B | |
| 23. | |
| A |
