Petrol contains alkanes such as pentane and hexane. Alkanes belong to an homologous series.
Which statement about the compounds in this homologous series is correct?
They have the same boiling point.
They have the same molecular formula.
They have the same general formula.
They have the same empirical formula.
105 exam-style questions on Edexcel GCSE Chemistry 9.1 Fuels, covering 9.1.1 Hydrocarbons and crude oil, 9.1.2 Fractional distillation of crude oil and its fractions, 9.1.3 The alkanes as a homologous series, 9.1.4 Complete and incomplete combustion, 9.1.5 Pollutants from burning fuels, 9.1.6 Hydrogen as a fuel and non-renewable fossil fuels, and 9.1.7 Cracking of larger alkanes. Each one has a worked solution and a mark scheme showing where the marks go.