A safety officer compares three liquid hydrocarbons at the same temperature. Each liquid could leak through a narrow gap in a storage container.
| Hydrocarbon | Number of carbon atoms in each molecule | Boiling point in °C | Time for 5.0 cm³ to pass through the same narrow tube in s |
|---|---|---|---|
| J | 6 | 69 | 8.0 |
| K | 10 | 174 | 24.0 |
| L | 14 | 254 | 60.0 |
Explain which hydrocarbon presents the greatest fire risk. Use the data in the table and your knowledge of the properties of hydrocarbons.
91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.