Four reports are produced for hydrocarbon samples in a fuel study.
A report is accepted only if the molecular formula is that of an alkane and the stated number of covalent bonds formed by each carbon atom is correct.
| Report | Molecular formula | Covalent bonds formed by each carbon atom |
|---|---|---|
| J | C9H18\text{C}_9\text{H}_{18}C9H18 | 4 |
| K | C9H20\text{C}_9\text{H}_{20}C9H20 | 3 |
| L | C10H20\text{C}_{10}\text{H}_{20}C10H20 | 3 |
| M | C10H22\text{C}_{10}\text{H}_{22}C10H22 | 4 |
Which statement is correct?
Report K should be accepted.
Report L should be accepted.
Report M should be accepted.
Report J should be accepted.
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.