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The Iodine Clock Investigation
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| Submitted: Sat Aug 30 2003
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The Iodine Clock Investigation PLANNING Introduction This is an investigation into the rate of a reaction and the factors that contribute to how fast a reaction will take place. Through the recording and analysis of raw data, this investigation also allows us to apply generally accepted scientific rules and to test them against results gained from accurate experimental procedures. Aim The aim of this experiment is to investigate the rate at which iodine is formed when the concentration and temperature of the reactants are varied, and to attempt to find the order and activation energy. The Chemistry 'THE IODINE CLOCK' - This is the experiment that will be used to investigate reaction rates, and it is a reaction between acidified hydrogen peroxide and potassium iodide: 2H+(aq) + 2I¯ (aq) + H[-1]2O2 (l) ( I2 (aq) + 2H2O2 (aq) Iodide ions are firstly oxidised by the hydrogen peroxide, as shown in the above equation. The iodine that is then...
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