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How does concentration affect reaction rate?
Member rating: No Rating | Words: | Submitted: Fri Mar 11 2005
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How does concentration affect reaction rate? Introduction I will be carrying out an investigation into how concentration affects reaction rate. I will be looking at sodium thiosulphate and hydrochloric acid. The reaction is represented by the following equation: Na2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + H2O(l) + SO2 (g) + S (s) I will add the hydrochloric acid to the Sodium Thiosulphate and time how log it takes for the mixture to turn opaque. I will use a different concentration of Sodium Thiosulphate each time. Prediction My predictions, using previous knowledge is that the higher the concentration of Sodium Thiosulphate there is the faster the reaction rate will be. This is based on the collision theory which I have outlined in Background Knowledge. In my preliminary work this has always been the case, for example if I used 40 ml of Sodium Thiosulphate and 10 ml of water it was much faster than when I used 10...
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