A technician analyses three samples of hydrocarbons. The table shows the molecular formula of each hydrocarbon found in each sample.
| Sample | Hydrocarbons found in the sample |
|---|---|
| A | C3H8\text{C}_{3}\text{H}_{8}C3H8, C9H20\text{C}_{9}\text{H}_{20}C9H20, C15H32\text{C}_{15}\text{H}_{32}C15H32, C21H44\text{C}_{21}\text{H}_{44}C21H44 |
| B | C10H22\text{C}_{10}\text{H}_{22}C10H22 only |
| C | C12H26\text{C}_{12}\text{H}_{26}C12H26, C13H28\text{C}_{13}\text{H}_{28}C13H28, C14H30\text{C}_{14}\text{H}_{30}C14H30 |
Which sample is most likely to be one fraction obtained from crude oil? Explain your answer using the data.
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.