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sodium thiosulphate
Member rating: No Rating | Words: | Submitted: Fri Dec 15 2006
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PLAN: Aim: An investigation into how the concentration of sodium thiosulphate affects its rate of reaction with hydrochloric acid. The reaction to be used is: Sodium thiosulphate + hydrochloric acid --> Sodium Chloride + Sulphur Dioxide + Water + Sulphur Na2S2O3(aq) + 2HCl(aq) ==> 2NaCl(aq) + SO2(aq) + H2O(l) + S(s) Introduction: In this coursework I am going to investigate the effect in rate of reaction. The rate of reaction means 'how fast the reaction is'. It can be measure as the rate of formation of product or the rate of disappearance of reactant. For example 'rusting is too slow reaction' we can hardly see any change looking at it. It is measured by dividing 1 by the time taken for a reaction to take place. According to the collision theory of particles there are five ways which effects the rate of reaction, temperature, concentration of (solutions), pressure in gases, presence of catalyst, surface area...
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