Chemistry 9701 · 8 Reaction kinetics
8.2 Effect of temperature on reaction rates and the concept of activation energy
Define activation energy, sketch Boltzmann distributions, and explain temperature effects on reaction rates.
- Questions
- 106
- Years
- 2015–2026
- Multiple choice
- 84
- Written answer
- 22
- Average marks
- 4.1
Practise reaction kinetics questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1484
- Paper 2variants 21, 22, 23, 2410
- Paper 5variants 51, 52, 537
- Paper 4variants 41, 42, 433
- Paper 3variants 33, 342
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 5 | – | 5 |
| 2023 | 2 | 7 | 2 | 11 |
| 2022 | 4 | 5 | 7 | 16 |
| 2021 | 1 | 4 | 4 | 9 |
| 2020 | 2 | 4 | 4 | 10 |
| 2019 | 2 | 7 | 4 | 13 |
| 2018 | 1 | 5 | 2 | 8 |
| 2017 | – | 5 | 5 | 10 |
| 2016 | 3 | 6 | 7 | 16 |
| 2015 | – | 4 | 4 | 8 |
