... ) • Peroxyacetyl nitrate (PAN) • Nitric acid (HNO ) • Partially oxidised hydrocarbons Primary and Secondary pollutants produced by motor vehicles Fuels contain compounds of nitrogen (NOx) these are oxidised when the fuel is burnt and make fuel NOx or thermal NOx when burnt under very high temperatures: N + O + heat ... dioxide and oxygen: O + NO O + NO 3 In natural conditions this reaches a steady state so that the rate of production of ozone is equal to the rate of destruction of ozone. However this is disrupted when hydrocarbons are added. The hydrocarbons are broken down into ...

• Word Count: 1852
• Approx Pages: 7
• Grade Level: High School