Sulfur impurities in fuels
Sulfur impurities in fuels
Crude oil contains small amounts of sulfur mixed with its hydrocarbons. The sulfur passes into fuels made from the crude oil, so it is an impurity in the fuel rather than part of the hydrocarbon molecules.
Step-by-step lessons on Edexcel GCSE Chemistry 9.1.5 Pollutants from burning fuels. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.