Chemistry 9701 · 7 Equilibria
7.2 Brønsted–Lowry theory of acids and bases
Define Brønsted-Lowry acids/bases, distinguish strong/weak species, sketch pH titration curves, and select indicators.
- Questions
- 50
- Years
- 2015–2026
- Multiple choice
- 36
- Written answer
- 14
- Average marks
- 5.3
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1436
- Paper 2variants 21, 22, 236
- Paper 3variants 32, 33, 34, 365
- Paper 4variants 42, 442
- Paper 5variants 521
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 3 | – | 3 |
| 2023 | – | 1 | 5 | 6 |
| 2022 | 1 | 4 | 1 | 6 |
| 2021 | 1 | 3 | 2 | 6 |
| 2020 | 1 | 2 | 3 | 6 |
| 2019 | – | 1 | 1 | 2 |
| 2018 | 1 | 3 | 2 | 6 |
| 2017 | – | 3 | 4 | 7 |
| 2016 | – | 4 | 1 | 5 |
| 2015 | – | 1 | 2 | 3 |
