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2) Calculate the concentrations of the FeSCN²" solutions you prepared in Part 1 and, using these values and their net absorbances, prepare a Beer's Law plot of net absorbance versus concentration for solutions 1 through 5. Determine the equation of the best-fit straight line. Use of a spreadsheet is encouraged (but not required) for this part. If a spreadsheet is used, detailed calculations must be shown for one of the solutions, and a printout of your spreadsheet attached to your lab. 3) Use the equation of the line and the net absorbances from Part II to determine the concentration of the FeSCN2* in each of the samples you prepared in Part II.

2) Calculate the concentrations of the FeSCN²" solutions you prepared in Part 1 and, using these values and their net absorbances, prepare a Beer's Law plot of net absorbance versus concentration for solutions 1 through 5. Determine the equation of the best-fit straight line. Use of a spreadsheet is encouraged (but not required) for this part. If a spreadsheet is used, detailed calculations must be shown for one of the solutions, and a printout of your spreadsheet attached to your lab. 3) Use the equation of the line and the net absorbances from Part II to determine the concentration of the FeSCN2* in each of the samples you prepared in Part II.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please do questions 2 and 3. Dont do it all, just show me how to solve one and I will do the rest.
2) Calculate the concentrations of the FeSCN²" solutions you prepared in Part 1 and, using these values and their net absorbances, prepare a Beer's Law plot of net absorbance versus concentration for solutions 1 through 5. Determine the equation of the best-fit straight line. Use of a spreadsheet is encouraged (but not required) for this part. If a spreadsheet is used, detailed calculations must be shown for one of the solutions, and a printout of your spreadsheet attached to your lab. 3) Use the equation of the line and the net absorbances from Part II to determine the concentration of the FeSCN2+ in each of the samples you prepared in Part II.
Transcribed Image Text:2) Calculate the concentrations of the FeSCN²" solutions you prepared in Part 1 and, using these values and their net absorbances, prepare a Beer's Law plot of net absorbance versus concentration for solutions 1 through 5. Determine the equation of the best-fit straight line. Use of a spreadsheet is encouraged (but not required) for this part. If a spreadsheet is used, detailed calculations must be shown for one of the solutions, and a printout of your spreadsheet attached to your lab. 3) Use the equation of the line and the net absorbances from Part II to determine the concentration of the FeSCN2+ in each of the samples you prepared in Part II.
Part 1: wavelength: 470 nm Flask 0.200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) %T Absorbance Net Absorbance 1 5.00 0.00 99.2 0.00349 5.00 2.00 72.9 0.137 0.13351 5.00 3.00 62.9 0.201 0.19751 5.00 4.00 53.8 0.270 0.26651 5.00 5.00 45.0 0.347 0.34351 Part 2: Wavelength: 470 nm Flask 0.00200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) %T Absorbance Net Absorbance 1 7.50 0.00 98.8 0.00524 0. 7.50 5.00 55.5 0.256 0.25076 7.50 7.50 42.2 0.375 0.36976 4 7.50 10.00 32.2 0.492 0.48676 7.50 12.50 21.0 0.678 0.67276 Part 3: Absorbance Temperature 8 Celsius Flask 0.00200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) 4. 7.50 10.00 0.699 7.50 12.50 39 Celsius 0.398
Transcribed Image Text:Part 1: wavelength: 470 nm Flask 0.200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) %T Absorbance Net Absorbance 1 5.00 0.00 99.2 0.00349 5.00 2.00 72.9 0.137 0.13351 5.00 3.00 62.9 0.201 0.19751 5.00 4.00 53.8 0.270 0.26651 5.00 5.00 45.0 0.347 0.34351 Part 2: Wavelength: 470 nm Flask 0.00200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) %T Absorbance Net Absorbance 1 7.50 0.00 98.8 0.00524 0. 7.50 5.00 55.5 0.256 0.25076 7.50 7.50 42.2 0.375 0.36976 4 7.50 10.00 32.2 0.492 0.48676 7.50 12.50 21.0 0.678 0.67276 Part 3: Absorbance Temperature 8 Celsius Flask 0.00200 M Fe(NO3)3 (ml) 0.00200 M SCN (ml) 4. 7.50 10.00 0.699 7.50 12.50 39 Celsius 0.398
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