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11 Nov 2019
Name Section: omet Date: Post-Lab Questions Why is it important to run a blank solution to set the zero %T for both Parts I and II in this experiment? How would your results be affected if you did not run a blank? 1. 2. Briefly explain why you can assume that the equilibrium concentrations of FeSCN ion in solutions S2-S6 are equal to the initial concentration of SCN ion in these solutions. 3. Using your average value for K and the concentration/absorbance data for mixture S6, verify the assumption discussed in Question 2. You may need to solve a quadratic equation A student neglected to run the blank solution to set the zero %T in Part 1 and obtained the Beer's Law plot shown below 4, a) If the student used the plot as shown, how would their calculated values of Kag be affected? b) How could the student modify their plot to improve their results? 0.8 0.6 0.4 0.2 10 30 40 20 Concentration (Molarity x 103) 83
Name Section: omet Date: Post-Lab Questions Why is it important to run a blank solution to set the zero %T for both Parts I and II in this experiment? How would your results be affected if you did not run a blank? 1. 2. Briefly explain why you can assume that the equilibrium concentrations of FeSCN ion in solutions S2-S6 are equal to the initial concentration of SCN ion in these solutions. 3. Using your average value for K and the concentration/absorbance data for mixture S6, verify the assumption discussed in Question 2. You may need to solve a quadratic equation A student neglected to run the blank solution to set the zero %T in Part 1 and obtained the Beer's Law plot shown below 4, a) If the student used the plot as shown, how would their calculated values of Kag be affected? b) How could the student modify their plot to improve their results? 0.8 0.6 0.4 0.2 10 30 40 20 Concentration (Molarity x 103) 83
Deanna HettingerLv2
8 Jan 2019