A fuel-burning heater is used in a greenhouse. The heater burns a hydrocarbon fuel at a constant rate. Its air inlet can become blocked by plant material.
A detector measured the concentration of carbon monoxide in the exhaust gases.
| Area of air inlet in cm² | Concentration of carbon monoxide in exhaust gases in ppm |
|---|---|
| 64 | 4 |
| 32 | 17 |
| 16 | 68 |
Suggest whether the concentration of carbon monoxide would be higher or lower than 68 ppm if the area of the air inlet decreased to 8 cm².
Explain your answer.
Explain why exposure to a high concentration of carbon monoxide can cause a person to faint.
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.