The molar extinction coefficients for A and B at 2=450 nm are ɛ=2,000. and ɛ=3000. M-1cm-1. At =650 nm, the molar extinction coefficients are ɛ=1,000. for both compounds. If a sample containing both species had absorbance values at 2=600 nm are A=0.070 and at 2=400 nm are A=0.185, what concentrations of A and B are present in the unknown solution? Assume that the absorbances are additive and that the measurements were made using a 1-cm cuvette. Show your work.
The molar extinction coefficients for A and B at 2=450 nm are ɛ=2,000. and ɛ=3000. M-1cm-1. At =650 nm, the molar extinction coefficients are ɛ=1,000. for both compounds. If a sample containing both species had absorbance values at 2=600 nm are A=0.070 and at 2=400 nm are A=0.185, what concentrations of A and B are present in the unknown solution? Assume that the absorbances are additive and that the measurements were made using a 1-cm cuvette. Show your work.
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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Transcribed Image Text:The molar extinction coefficients for A and B at λ = 450 nm are ε = 2,000 and ε = 3,000 M⁻¹cm⁻¹. At λ = 650 nm, the molar extinction coefficients are ε = 1,000 for both compounds. If a sample containing both species had absorbance values at λ = 600 nm as A = 0.070 and at λ = 400 nm as A = 0.185, what concentrations of A and B are present in the unknown solution? Assume that the absorbances are additive and that the measurements were made using a 1-cm cuvette. Show your work.
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