The Effect Of Concentration On The Rate Of Reaction

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The hypothesis that as (the first variable being tested), the concentration in the solution is changed and it becomes more dilute, this will result will be a slower rate of reaction. Therefore, it is also hypothesised that the addition of a catalyst will cause the rate of those reactions to speed up, was proven correct by the results of this experiment, in that the changing of the concentration and the addition of a catalyst changed the speed at which the reaction occurred. The results from both Part 1 and Part 2 conclusively showing that the have a direct effect on the rate at which the reaction occurs. In order to come to this conclusion, the data needs to be transformed into rate laws. In order to get a complete rate law, the order of…show more content…
Using the results from the tables above (Table 1 and Table 3), the average reaction time for the NaHSO4 can be seen dropping from 19.833 seconds to 2.23 seconds, a drop of 88.76%(Refer to calculations in journal). Additionally, the NaHSO4 in the 10 ml solution dropped its average reaction time by 81.52% down from 34.523 seconds to 6.38 seconds. Thus, the experimental data proves that catalysts speed up the rate of reaction and thereby validates the hypothesis for this investigation. Though the overall test results confirm both hypotheses, it can be seen that there is a disparity between the experimental results and the accepted data results. The experiment produced results that were within 5% of each other, thus within the acceptable margin of error. However, there were still large variations between results both within the the same batches and different ones, thus, calling into question the success of variable management within the experiment. Due to the array of variables that could have affected the experimental data over the course of the experiment it is hard to pinpoint with certainty the actual cause for the discrepancies. However, the reliability of the experiment could be improved majorly with one change. The experiment was conducting using the minimal amount of test repetition necessary to get the required results. If the test were to be completed, several tests for each concentration
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