Coal burned in some power stations contains small amounts of sulfur as an impurity.
Name the gas formed when the sulfur impurities burn.
Write the balanced equation for sulfur burning in oxygen. Include state symbols.
Describe how the gas named in (a) causes acid rain.
Give two effects of acid rain.
Petrol does not contain nitrogen, but car engines produce oxides of nitrogen. Explain why.
37 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.