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
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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Question
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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F56ebe2df-ee1d-4027-8092-318be57241d6%2Fc252b9db-9437-47d1-8c1e-ab98b7c3adda%2Fvwvf4vz_processed.png&w=3840&q=75)
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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