O-LevelChemistryOrganic Chemistry5070/11 · Oct/Nov 2023 · Q371 Mark

Glycerol is an alcohol with three –OH groups per molecule. What is the equation for the combustion of glycerol?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AC3H8O3 + 5O2 → 3CO2 + 4H2O

B2C3H8O3 + 3O2 → 6CO2 + 8H2

C2C3H8O3 + 7O2 → 6CO2 + 8H2O

D4C3H5O3 + 11O2 → 12CO2 + 10H2O

✓ Correct answer

C: 2C3H8O3 + 7O2 → 6CO2 + 8H2O

Oracle Prep sorts past-paper questions by topic, so you can drill Organic Chemistry and see which topics are most likely to come up next.

Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 1, question 37.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content