lab 15 - Liana Raineault Lab 15 Discussion Josh Kurzman...

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Liana Raineault Lab 15 Discussion Josh Kurzman 3/5/08 In this lab we observed the effect of concentration and temperature on the rate of decomposition of H2O2 with a catalyst I-. In part one we concentrated on the effect of concentration on the rate. We mixed the reactants together in a flask with a stir bar and recorded the time as O2 gas was collected in a burette at certain volumes. In the first solution we made the mistake of not equalizing the levels of water in the burette and the syringe. This made pressure build up in the burette and forced the reaction to go a little bit slower. We corrected our mistake towards the end of the reaction so our initial and final data readings should be correct. This is why I only included in the first and last data points in creating the trend-line for this solution. More accurate readings were collected for solutions two and three as we equalized the water levels throughout. The basic conclusion that we came to was that increasing the concentration of
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