Fill in the blanks in the equations and statements below.
Nitrogen and oxygen molecules dissociate on hot metal surfaces such
as those found in car engines creating nitrogen and oxygen atoms which
can recombine to form nitrogen monoxide.
N2 + O2 -->
Nitrogen monoxide (a pollutant) is slowly oxidised to nitrogen dioxide
(a pollutant) by oxygen, ozone and HO2 radicals.
2NO + O2 -->
Nitrogen dioxide undergoes photolysis in the presence of sunlight creating
highly reactive atoms.
NO2 + --> NO +
These oxygen atoms react with oxygen molecules forming .
O + + M --> O3 +
Ozone reacts with hydrocarbons (another pollutant) to form a complex
mixture including aldehydes (a pollutant).
+ hydrocarbons --> complex mixture including