Propane (C3H8\text{C}_3\text{H}_8C3H8), heptane (C7H16\text{C}_7\text{H}_{16}C7H16), and docosane (C22H46\text{C}_{22}\text{H}_{46}C22H46) are hydrocarbons found in, or obtained from, crude oil.
Which statement about these three substances is correct?
They have the same boiling point.
They belong to the same homologous series.
They have the same empirical formula.
They produce different products when completely combusted in excess oxygen.
Practise Edexcel GCSE Chemistry Fuels with exam-style questions for Foundation and Higher tier. 105 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
