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postlab8 - L aura Lanier L ab L2 Exp 8 D iscuss ion Conc l...

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Laura Lanier Lab L2 Exp 8 10/28/09 Discussion /Conclusion The data collected in Part A appears to be valid as the intercept of the trend line that connects the data on the chart is -0.047; the ideal y intercept would be 0, as when there is no concentration, there is no absorption, but the error is minimal, despite that its incalculable nature. The error in this part of the experiment could be due to human error in measurement and not allowing enough time for the reaction to reach equilibrium before measuring the absorption of the solution. However, this low error is relatively low and proves that the assumption of full reaction to consume all of the iron did not affect the absorption vs. concentration results in a large way. Therefore, using the experimental values and Beer’s Law to determine the equilibrium concentration of the product is also valid; the error in calculating the equilibrium concentration of FeSCN 2+ would be
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