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An investigation into concentration and rate of reaction
Member rating: No Rating | Words: | Submitted: Tue Dec 13 2005
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An investigation into concentration and rate of reaction Aim: to determine the effect on rate of reaction of changing the concentration of sodium thiosulphate in the reaction sodium thiosulphate + Hydrochloric acid -> Sodium Chloride + sulphur dioxide + Sulphur + water. Scientific background A reaction is a change or transformation in which a substance decomposes, combines with other substances, or interchanges constituents with other substances. The particular reaction of sodium thiosulphate + Hydrochloric acid -> Sodium Chloride + sulphur dioxide + Sulphur + water or Na2S2O3 + 2HCl -> 2NaCl + SO2 + S + H2O. This is a precipitate reaction in which a precipitate (in this case sulphur) is formed, because of this we can tell when the reaction is complete by judging when a certain amount of sulphur is produced. The collision theory states that for a reaction to take place particles have to...
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