The figure shows the absorption spectra of two pure compounds, A and B, each at a concentration of 1.50 x 10-4 M. The table shows the measured absorbance of these standards in a 1.000 cm pathlength cell at five different wavelengths, along with the absorbance of an unknown mixture of the two compounds at the same wavelengths. Wavelength Compound Compound (nm) A standard B standard 440 0.430 0.213 470 0.642 0.367 500 0.609 0.444 530 0.392 0.457 กาา1 0224 560 Mixture 0.262 0.427 0.475 0.431 0303 Absorbance 0.800- 0.700- 0.600- 0.500- 0.400- 0.300- 0.200- 0.100- 0.000 400 A 450 Spectra of compounds A and B 500 B 550 Wavelength (nm) 600
The figure shows the absorption spectra of two pure compounds, A and B, each at a concentration of 1.50 x 10-4 M. The table shows the measured absorbance of these standards in a 1.000 cm pathlength cell at five different wavelengths, along with the absorbance of an unknown mixture of the two compounds at the same wavelengths. Wavelength Compound Compound (nm) A standard B standard 440 0.430 0.213 470 0.642 0.367 500 0.609 0.444 530 0.392 0.457 กาา1 0224 560 Mixture 0.262 0.427 0.475 0.431 0303 Absorbance 0.800- 0.700- 0.600- 0.500- 0.400- 0.300- 0.200- 0.100- 0.000 400 A 450 Spectra of compounds A and B 500 B 550 Wavelength (nm) 600
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
Related questions
Question
![The figure shows the absorption spectra of two pure
compounds, A and B, each at a concentration of
1.50 x 10-4 M.
The table shows the measured absorbance of these
standards in a 1.000 cm pathlength cell at five different
wavelengths, along with the absorbance of an unknown
mixture of the two compounds at the same wavelengths.
[A] =
Absorbance
Mixture
Wavelength Compound Compound
A standard B standard
(nm)
440
0.430
0.213
0.262
470
0.642
0.367
0.427
500
0.609
0.444
0.475
530
0.392
0.457
0.431
560
0.231
0.334
0.302
Use a spreadsheet
calculate the concentration of each compound in the mixture.
0.800-
0.700-
0.600-
0.500-
0.400-
0.300-
0.200-
0.100-
0.000.
M
400
A
[B] =
450
Spectra of compounds A and B
B
500
550
Wavelength (nm)
600
M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F800e00e6-20e1-4bd6-889a-8153d00deee4%2Fe6bc7066-ed40-420f-adbe-13e7154015d0%2F3ucjr8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The figure shows the absorption spectra of two pure
compounds, A and B, each at a concentration of
1.50 x 10-4 M.
The table shows the measured absorbance of these
standards in a 1.000 cm pathlength cell at five different
wavelengths, along with the absorbance of an unknown
mixture of the two compounds at the same wavelengths.
[A] =
Absorbance
Mixture
Wavelength Compound Compound
A standard B standard
(nm)
440
0.430
0.213
0.262
470
0.642
0.367
0.427
500
0.609
0.444
0.475
530
0.392
0.457
0.431
560
0.231
0.334
0.302
Use a spreadsheet
calculate the concentration of each compound in the mixture.
0.800-
0.700-
0.600-
0.500-
0.400-
0.300-
0.200-
0.100-
0.000.
M
400
A
[B] =
450
Spectra of compounds A and B
B
500
550
Wavelength (nm)
600
M
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