Sulphur Dioxide…

This entry is part 1 of 4 in the series Sulphur

When sulphur burns, or when compounds that contain sulphur burn such as coal and oil, sulphur dioxide gas is released. SO2 is a choking, foul smelling and acidic gas which contributes to acid rain. It is released naturally as a decay product of dead plants and animals and, more significantly, when volcanoes erupt. The sulphur …
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Rotten Eggs…

This entry is part 3 of 4 in the series Sulphur

Rotten eggs have a very distinctive smell. The odour is caused by a gas called hydrogen sulphide (H2S). It is easy to make by reacting iron sulphide with hydrochloric acid… One molecule of iron sulphide reacts with two molecules of hydrochloric acid to produce one molecule of iron chloride and one molecule of hydrogen sulphide. …
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