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Investigating a Factor affecting the rate of reaction between Sodium Thiosulphate and dilute Hydrochloric acid
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Investigating a Factor affecting the rate of reaction between Sodium Thiosulphate and dilute Hydrochloric acid Planning We have been asked to investigate the rates of a reaction and the effect different changes have on it. The rate of a reaction can be described as the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. This rate is calculated by dividing 1 by the time taken for the reaction to occur. The reaction I have been asked to investigate is: Sodium Thiosulphate + Hydrochloric Acid ? Sodium Chloride + Water + Sulphur Dioxide + Sulphur Na2 S3 O2 (aq) + 2HCl (aq) ? 2NaCl (aq) + H2O (l) + SO2 (aq) + S(s) The dilute Hydrochloric acid reacts with the Sodium Thiosulphate solution to give a precipitate of sulphur. Both liquids are clear and colourless before they react. The appearance of the insoluble sulphur during the reaction...
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