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Rates of Reaction
Member rating: No Rating | Words: | Submitted: Thu Aug 21 2003
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Rates of Reaction A demonstration was presented to me, showing the reaction between 50ml of sodium thiosulphate solution (concentration 20g sodium thiosulphate/litre of aqueous solution) and 10ml of hydrochloric acid (concentration 37g per litre of aqueous solution) These chemicals, after they have reacted together, produce a product called sulphur. This is insoluble in water and turns the solution cloudy. A cross was drawn on a piece of paper and then placed under the solution, the cross is viewed from above and the time taken for this cross to disappear depends on the amount of time it takes the sulphur to be produced. Dilute Hydrochloric acid reacts with sodium thiosulphate solution to give a precipitate of sulphur. The chemical equation for this reaction is- Na2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + H2O(I) + SO2(aq) + S(s) It is my task to investigate- "A factor that will alter the rate of...
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