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Explain, giving examples from the articles, what is meant by oxidation and show how oxidation reactions are used to cause explosions. Outline reasons why some explosive mixtures oxidise faster than others.
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1. * Explain, giving examples from the articles, what is meant by oxidation and show how oxidation reactions are used to cause explosions. Outline reasons why some explosive mixtures oxidise faster than others. [4] An element is oxidised if... It gains oxygen. It loses electrons. Its oxidation state increases. Explosives such as gunpowder or black powder contain powdered carbon, sulphur and potassium nitrate. This can be ignited by a fuse where carbon and sulphur will be oxidised. Carbon will form into Carbon Dioxide and Sulphur will form into Sulphur Dioxide.> This reaction shows when a pure sample of carbon burns in air. C(s) + O2(g) › CO2(g) This is an oxidation reaction where carbon has gained oxygen and its oxidation state has increased from 0 to +4 The potassium nitrate in the gunpowder acts as an oxidiser and provides oxygen for the reaction. All the oxygen required is available almost instantly; therefore carbon and sulphur burn in...
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