Chemistry 5070 · 11 Organic chemistry
11.7 Carboxylic acids
Describe the reactions of carboxylic acids, the oxidation of ethanol to ethanoic acid, and the formation of esters using an acid catalyst.
- Questions
- 148
- Years
- 2004–2026
- Multiple choice
- 94
- Written answer
- 54
- Average marks
- 3.8
Practise organic chemistry questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 01, 11, 1286
- Paper 2variants 02, 21, 2233
- Paper 4variants 04, 41, 4229
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 8 | – | 8 |
| 2023 | 5 | 3 | 8 |
| 2022 | 5 | 3 | 8 |
| 2021 | 10 | 4 | 14 |
| 2020 | 9 | 6 | 15 |
| 2019 | 8 | 5 | 13 |
| 2018 | 7 | 4 | 11 |
| 2017 | 6 | 7 | 13 |
| 2016 | 5 | 1 | 6 |
| 2015 | 5 | 3 | 8 |
| 2014 | – | 1 | 1 |
| 2013 | 2 | 1 | 3 |
| 2012 | 2 | 1 | 3 |
| 2011 | 3 | – | 3 |
| 2009 | 2 | 3 | 5 |
| 2008 | 1 | 5 | 6 |
| 2007 | 4 | 2 | 6 |
| 2006 | – | 7 | 7 |
| 2005 | 3 | 4 | 7 |
| 2004 | – | 3 | 3 |
