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I will be studying the rate of reaction between sodium thiosulphate and dilute hydrochloric acid.
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Daniel Hatton Investigating Rate of Reaction I will be studying the rate of reaction between sodium thiosulphate and dilute hydrochloric acid. I believe that if I increase the concentration of the sodium thiosulphate, the rate of reaction will increase, because the molecules are closer together, so there are more collisions per second. I believe if I double the concentration of the sodium thiosulphate then the rate of reaction will double, because there will be twice as many sodium thiosulphate molecules in the same area, and so there will be twice as many collisions. Using the method on the briefing sheet I carried out preliminary experiments using measuring cylinders. The times taken for the cross to disappear are shown bellow: Vol. of Thiosulphate/cm Vol. of H O/cm Time/Sec. 50 0 39 10 40 208 This seemed to be a reasonable range of reaction times so I will study this range of concentrations. Method: Apparatus: -Safety Goggles -Burette -Conical Flask -Measuring Cylinder -Thiosulphate ...
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