A technician burns a hydrocarbon fuel in a laboratory burner. The fuel flow is kept constant. The technician changes the flow of air into the burner and records the results.
| Air flow in dm³ per minute | Carbon monoxide concentration in the exhaust in ppm | Energy released in kJ per gram of fuel |
|---|---|---|
| 2.0 | 820 | 31 |
| 4.0 | 310 | 38 |
| 6.0 | 40 | 44 |
Describe the trends in the results as the air flow increases.
Explain the trends in the results.
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.