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Rates of Reaction Course Work.
Member rating: No Rating | Words: | Submitted: Wed Nov 26 2003
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Chemestry Rates of Reaction Course Work Introduction/Aim: This coursework is about the investigation of the effect of concentration on the rate of reaction between Sodium Thiosulphate (Na2S2O3) and Hydrochloric acid (HCL) by simply changing the concentration of Sodium Thiosulphate. I made a set of results which were obtained by using the method of 'precipitation'. This is when the product of the reaction is a precipitate, which clouds the solution. One observes a marker through the solution and measures how long it takes for it to disappear. Plan: In order to make it a fair test the volume of hydrochloric acid had to be kept constant each time (5cm³). What had to be changed was a) the amount of Sodium Thisulphate and b) the amount of water. We decided our total volume to be 55 cm³, 5 cm³ of that hydrochloric acid, so the rest consisted of Sodium Thisulphate and Water. To obtain our...
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