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a) If an unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration of FeSCN2+ in the unknown sample? b) What are the units of concentration?  c) If the path length of light is 13.5 mm (millimeters), what is the absorptivity coefficient, ?ε, for FeSCN2+?  d) What are the units of the absorptivity coefficient, ?ε?

a) If an unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration of FeSCN2+ in the unknown sample? b) What are the units of concentration?  c) If the path length of light is 13.5 mm (millimeters), what is the absorptivity coefficient, ?ε, for FeSCN2+?  d) What are the units of the absorptivity coefficient, ?ε?

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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a) If an unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration of FeSCN2+ in the unknown sample?

b) What are the units of concentration? 

c) If the path length of light is 13.5 mm (millimeters), what is the absorptivity coefficient, ?ε, for FeSCN2+? 

d) What are the units of the absorptivity coefficient, ?ε?

In a Beer's Law study, a Beer's Law Graph for FeSCN2+ was done at 485 nm and is shown below. Beer's Law Plot of FeSCN2+ 0.900 y = 0.1215x - 0.0023 R2 = 0.9982 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 -0.100 Concentration (ppm) Absorbance at 485 nm
Transcribed Image Text:In a Beer's Law study, a Beer's Law Graph for FeSCN2+ was done at 485 nm and is shown below. Beer's Law Plot of FeSCN2+ 0.900 y = 0.1215x - 0.0023 R2 = 0.9982 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 -0.100 Concentration (ppm) Absorbance at 485 nm
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