Chemistry 9701 · 11 Group 17
11.3 Some reactions of the halide ions
Describe halide reducing power, reactions with silver ions/ammonia, and reactions with concentrated sulfuric acid.
- Questions
- 160
- Years
- 2015–2026
- Multiple choice
- 68
- Written answer
- 92
- Average marks
- 8.5
Where this subtopic appears
- Paper 3variants 31, 32, 33, 34, 35, 36, 37, 3871
- Paper 1variants 11, 12, 1368
- Paper 2variants 21, 22, 2317
- Paper 4variants 422
- Paper 5variants 51, 532
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 15 | – | 15 |
| 2023 | 3 | 5 | 5 | 13 |
| 2022 | 2 | 6 | 6 | 14 |
| 2021 | 4 | 8 | 7 | 19 |
| 2020 | 3 | 3 | 10 | 16 |
| 2019 | 2 | 9 | 9 | 20 |
| 2018 | 2 | 10 | 4 | 16 |
| 2017 | 2 | 9 | 8 | 19 |
| 2016 | 1 | 9 | 6 | 16 |
| 2015 | – | 5 | 7 | 12 |
