SelAbsorbanceSVerify your molar absorptivity value.Did you report your data to the correct number of significant figures?Analytical wavelengthAnalytical wavelength for blue dye (nm)Calibration curveSolution12345Dye concentration (μM)15.207.51Unknown solution3.741.891.01Molar absorptivity (μM ¹cm-¹)AbsorbanceConcentration of unknown blue dye (µM)629Absorbance0.7560.4320.2590.1750.1440.083How to calculate concentration from absorbanceSAdtra01

We have to verify the molar absorptivity value.

Verify your molar absorptivity value. Did you report your data to the correct number of significant figures? Analytical wavelength Analytical wavelength for blue dye (nm) Calibration curve Solution 1 2 3 4 5 сл Dye concentration (μM) 15.20 7.51 3.74 1.89 1.01 Molar absorptivity (μM-¹cm¹) 629 Absorbance 0.756 0.432 0.259 0.175 0.144 0.083

Verify your molar absorptivity value. Did you report your data to the correct number of significant figures? Analytical wavelength Analytical wavelength for blue dye (nm) Calibration curve Solution 1 2 3 4 5 сл Dye concentration (μM) 15.20 7.51 3.74 1.89 1.01 Molar absorptivity (μM-¹cm¹) 629 Absorbance 0.756 0.432 0.259 0.175 0.144 0.083

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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Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

Sel
Absorbance
S
Verify your molar absorptivity value.
Did you report your data to the correct number of significant figures?
Analytical wavelength
Analytical wavelength for blue dye (nm)
Calibration curve
Solution
1
2
3
4
5
Dye concentration (μM)
15.20
7.51
Unknown solution
3.74
1.89
1.01
Molar absorptivity (μM ¹cm-¹)
Absorbance
Concentration of unknown blue dye (µM)
629
Absorbance
0.756
0.432
0.259
0.175
0.144
0.083
How to calculate concentration from absorbance
S
A
d
tra
01

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