Alkanes as Fuel
Use this landing page to move quickly between the main fuel-related alkane revision pages for Edexcel A Level Chemistry Topic 6. These pages cover combustion, sulfur oxide pollution, nitrogen oxide pollution and how catalytic converters reduce harmful exhaust emissions.
Choose an Alkanes as Fuel Page
Alkanes are widely used as fuels because combustion is exothermic and releases useful energy. These pages separate the fuel topic into combustion chemistry, pollutant formation and catalytic converter treatment so students can connect equations, reaction conditions and environmental consequences.
Key idea: Complete combustion produces carbon dioxide and water, but real fuel combustion can also produce carbon monoxide, particulates and acidic or photochemical pollutants from sulfur and nitrogen oxides.
Combustion
Revise complete and incomplete combustion of alkanes, including the key products, equations and why combustion releases energy.
Oxides of Sulfur
Learn how sulfur impurities in fuels form sulfur dioxide and how sulfur oxides contribute to acid rain and environmental damage.
Oxides of Nitrogen
Review how high temperatures in engines allow nitrogen and oxygen from air to react, producing nitrogen oxides that cause pollution.
Catalytic Converter
Revise how catalytic converters use transition metal catalysts to convert harmful exhaust gases into less harmful products.
How to Use These Pages
Start with combustion to secure the chemical equations for alkane fuels. Then revise sulfur oxides and nitrogen oxides as pollutant case studies before finishing with catalytic converters. For each page, practise writing balanced equations and linking chemical changes to environmental consequences.
Exam focus: Be able to write combustion equations, explain why pollutants form in engines and describe how catalytic converters reduce carbon monoxide, nitrogen oxides and unburnt hydrocarbons.
Master Topic 6A/6B Organic Chemistry and Alkanes for Edexcel A Level Chemistry
Continue from these free revision notes into the full Topic 6A/6B Organic Chemistry and Alkanes course for Edexcel A Level Chemistry Paper 2 (9CH0/02), with guided video teaching, diagnostic MCQ practice, teacher-marked short-answer questions and a specification assignment with a personalised progress report.
Guided video teaching
Learn the chemistry and exam technique through structured video lessons with worked examples and walkthroughs.
Instant MCQ feedback
Auto-marked MCQ quizzes provide immediate diagnostic feedback for every answer choice.
Teacher-marked SAQs
Submit written exam responses and receive chemistry specialist feedback with improvement guidance.
Progress tracking
Identify strengths and weaknesses across the full Topic 6A/6B specification with targeted reporting.
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Some ionic radii are shown.
| Ion | Ionic radius / nm |
|---|---|
| Na+ | 0.102 |
| K+ | 0.138 |
| F− | 0.133 |
| Cl− | 0.180 |
Which compound has the strongest ionic bonding?
Explain why the metallic bonding in magnesium is much stronger than that in sodium.
Copyright notice: This revision page, including its written explanations, layout and teaching sequence, is produced for Online Learning System by Dr. Mohammed Al-Fatah. It is intended for student revision and may not be copied, redistributed or republished without permission.