A technician burns a hydrocarbon fuel in air in a combustion chamber. The hydrocarbon contains carbon and hydrogen only.
| Condition | Result |
|---|---|
| Oxygen supply | Limited |
| Temperature | High |
| Gases detected in the exhaust | Carbon dioxide, water vapour, carbon monoxide and oxides of nitrogen |
Explain where the atoms in the carbon dioxide, water vapour and oxides of nitrogen detected in the exhaust came from.
The test is repeated at the same high temperature, but with a plentiful supply of air.
Predict the effect on carbon monoxide production and state whether oxides of nitrogen would still be produced. Explain both answers.
102 exam-style questions on AQA GCSE Chemistry 9.3 Common atmospheric pollutants and their sources, covering 9.3.1 Atmospheric pollutants from fuels and 9.3.2 Properties and effects of atmospheric pollutants. Each one has a worked solution and a mark scheme showing where the marks go.