Chemistry 0620 · 6 Chemical reactions
6.3 Reversible reactions and equilibrium
Describe reversible reactions, define dynamic equilibrium, predict shifts using Le Chatelier's principle, and explain conditions for the Haber and Contact processes.
- Questions
- 289
- Years
- 2010–2026
- Multiple choice
- 195
- Written answer
- 94
- Average marks
- 4.8
Practise chemical reactions questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 2variants 21, 22, 23147
- Paper 1variants 11, 12, 1356
- Paper 4variants 41, 42, 4354
- Paper 3variants 31, 32, 3332
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 2 | 10 | – | 12 |
| 2023 | 3 | 9 | 11 | 23 |
| 2022 | 3 | 10 | 16 | 29 |
| 2021 | 1 | 13 | 10 | 24 |
| 2020 | – | 16 | 17 | 33 |
| 2019 | 6 | 17 | 11 | 34 |
| 2018 | 3 | 9 | 13 | 25 |
| 2017 | 5 | 7 | 16 | 28 |
| 2016 | 3 | 15 | 13 | 31 |
| 2015 | 2 | 6 | 3 | 11 |
| 2014 | – | 6 | 5 | 11 |
| 2013 | – | 3 | 3 | 6 |
| 2012 | – | – | 3 | 3 |
| 2011 | – | 5 | 4 | 9 |
| 2010 | – | 6 | 4 | 10 |
