Describe Sulfur Dioxide & Nitrogen as Pollutants

SULFUR: caused when sulfur atoms which are present in some fossil fuels are oxidised (S + O2 → SO2). It is then further oxidised in the atmosphere to sulfur trioxide, SO3. This gas dissolves in rainwater to make acid rain, which is a dilute solution of sulfuric acid, H2SO4(SO3 + H2O → H2SO4) NITROGEN: high temperatures and pressures inside a car engine can cause nitrogen and oxygen in the air to react together to make oxides of nitrogen, the two which are made inside engines are NO and NO2 grouped together with the general formula NOx which can cause acid rain, they also react in the atmosphere with other pollutants to make photochemical smog. Smog can have major health effects, causing asthma attacks and even death