The molar absorptivity of a compound at 500 nm wavelength is 252 M-1cm-1. Suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution. What would be the absorbance in a 3 .00 mm pathlength cell? Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.Absorbance of Unknown Dyeat 542 nm0.50.450.40.350.30.250.2y = 15200x - 0.018.0.150.15.00E-061.00E-051.50E-052.00E-052.50E-053.00E-053.50E-05Concentration (M)What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.21 at 542 nm?Absorbance at 542 nm

1.) We would use formula of Absorbance. Note : As you have uploaded two questions, I'll…

The molar absorptivity of a compound at 500 nm wavelength is 252 M-1cm-1. Suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution. What would be the absorbance in a 3 .00 mm pathlength cell?

The molar absorptivity of a compound at 500 nm wavelength is 252 M-1cm-1. Suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution. What would be the absorbance in a 3 .00 mm pathlength cell?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.16QAP

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Question

The molar absorptivity of a compound at 500 nm wavelength is 252 M^-1cm^-1. Suppose one prepares a solution by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution. What would be the absorbance in a 3 .00 mm pathlength cell?

Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.
Absorbance of Unknown Dye
at 542 nm
0.5
0.45
0.4
0.35
0.3
0.25
0.2
y = 15200x - 0.018.
0.15
0.1
5.00E-06
1.00E-05
1.50E-05
2.00E-05
2.50E-05
3.00E-05
3.50E-05
Concentration (M)
What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.21 at 542 nm?
Absorbance at 542 nm

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