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Figure 4 shows some information about the composition of pollutant exhaust gases from the engines of two different vehicles - Edexcel - GCSE Chemistry Combined Science - Question 3 - 2022 - Paper 1
Question 3
Figure 4 shows some information about the composition of pollutant exhaust gases from the engines of two different vehicles. | pollutant | mass of p... show full transcript
Worked Solution & Example Answer:Figure 4 shows some information about the composition of pollutant exhaust gases from the engines of two different vehicles - Edexcel - GCSE Chemistry Combined Science - Question 3 - 2022 - Paper 1
Step 1
Give two ways in which the data in Figure 4 shows that the diesel engine is more damaging to the environment than the petrol engine.
Answer
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The mass of nitrogen oxides emitted by the diesel engine (2.0 g/km) is significantly higher than that of the petrol engine (0.36 g/km). Nitrogen oxides are known to contribute to smog and respiratory problems, making this a critical point regarding environmental damage.
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The mass of particulates released by the diesel engine (0.0460 g/km) is also a concern, considering that particulates can cause serious health issues, particularly respiratory disorders. In comparison, the petrol engine emits slightly less (0.0600 g/km), but the higher nitrogen oxides from diesel make it more harmful overall.