IB Chemistry HL · 2025
6.2 Electron transfer reactions
62 past paper questions from 16 papers across 3 exam sessions. See what repeats, then practise the same skills with AI marking.
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HL archive · 2025 to 2026
6.2 Electron transfer reactions
Latest exam session: May 2026
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Micro-topics in 6.2 Electron transfer reactions
In syllabus order. The ring is the share of papers each appears in.
- Frequently tested
last May 26 P2 TZ3
- Frequently tested
last May 26 P2 TZ2
- Frequently tested
last May 26 P1 TZ1
- Frequently tested
last May 26 P2 TZ3
- Frequently tested
last May 26 P2 TZ1
- Frequently tested
last May 26 P1 TZ1
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Top 4 of 6 micro-topics for the next sitting. Numbers are questions per year.
fewermore
| Micro-topic | 2025 | 2026 |
|---|---|---|
| 10Oxidation states and identifying redox, 2025: 10 questions | 6Oxidation states and identifying redox, 2026: 6 questions | |
| 7Electrochemical cells, 2025: 7 questions | 5Electrochemical cells, 2026: 5 questions | |
| 9Standard electrode potentials and cell EMF (HL), 2025: 9 questions | 3Standard electrode potentials and cell EMF (HL), 2026: 3 questions | |
| 4Half-equations and balancing redox, 2025: 4 questions | 3Half-equations and balancing redox, 2026: 3 questions |
2 more micro-topics with a free account
- Frequently testedin at least a quarter of all papers, and still appearing in the last two years
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Questions on 6.2 Electron transfer reactions, by exam session
Which papers asked about 6.2 Electron transfer reactions, and which question numbers. Open a paper to see them highlighted.
May 2026
16 questions across 6 papers
November 2025
14 questions across 4 papers
May 2025
14 questions across 6 papers
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Frequently asked questions
Short answers about this page.
Which Chemistry HL exam sessions are covered for 6.2 Electron transfer reactions?
3 exam sessions from 2025 to 2026, the latest May 2026. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 16 papers in this archive.
Which 6.2 Electron transfer reactions topic comes up most?
Oxidation states and identifying redox (6.2.1): in 94% of papers, last seen May 26 P2 TZ3. Usually "Identify", worth about 1.1 marks in a paper that includes it.
Can I see the original question and mark scheme?
No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.
What do "banker", "due" and "rising" mean?
Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.
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