Discussion 2

Discussion 2 - Lin 1 Katherine Lin Discussion: Chemical...

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Lin 1 Katherine Lin Discussion: Chemical Kinetics C1500: Sec 002 TA: Wenbo Due 2/13/08 In this experiment, the goal was to determine how the rate of the reaction is affected by temperature, presence of catalyst, and the concentration of reactants. The purpose was definitely fulfilled as we determined the effects of each factor on the reaction of persulfate and iodide, which reacts to form sulfate and iodine. From the results and data, we were able to figure not only the order of the reaction, but also how changing the reactant concentration (part one), raising temperature (part two), and adding a catalyst (part 2) will affect how long it takes the reaction to perform. For Part 1, in trials 1, 2, 3, we can observe that by decreasing the concentration of iodide, the time it takes the reaction to complete increases. Therefore, the rate of the reaction decreases when the concentration of reactants decreases. Conversely, in trials 2, 4, and 5, by increasing the concentration of persulfate, the time of the reaction decreases. We can also conclude that by increasing the concentration of reactants, the rate increases. These observations can be supported by the rate law of the reaction we are observing which would be: rate=k [persulfate] m [iodide] n
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This note was uploaded on 04/15/2008 for the course CHEM C1500 taught by Professor Hansen during the Spring '08 term at Columbia.

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Discussion 2 - Lin 1 Katherine Lin Discussion: Chemical...

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