You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to determine their concentration. The following representative information about the absorbance data were also provided. Measurements were made in a 1.0 cm quartz cells. Pure A (mol/l) 1.5 x 10-1 Pure B (mol/l) Abs @510 nm Abs @575 nm 0 0.714 0.097 0 6 x 102 0.298 0.757 Unknown conc in mixture 0.671 0.330 Unknown conc in mixture How would you go about calculating the concentration of the two salts?
You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to determine their concentration. The following representative information about the absorbance data were also provided. Measurements were made in a 1.0 cm quartz cells. Pure A (mol/l) 1.5 x 10-1 Pure B (mol/l) Abs @510 nm Abs @575 nm 0 0.714 0.097 0 6 x 102 0.298 0.757 Unknown conc in mixture 0.671 0.330 Unknown conc in mixture How would you go about calculating the concentration of the two salts?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 4.14CYU
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Calculate the concentration of the two salts given their absorbances.
![You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to
determine their concentration. The following representative information about the absorbance data were also
provided. Measurements were made in a 1.0 cm quartz cells.
Pure A (mol/l)
1.5 x 10-1
Pure B (mol/l)
Abs @510 nm
Abs @575 nm
0
0.714
0.097
0
6 x 102
0.298
0.757
Unknown conc in mixture 0.671
0.330
Unknown conc in mixture
How would you go about calculating the concentration of the two salts?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F48e69b1b-69b1-4d28-aad3-54f6c8d93a96%2F0c192adb-cd43-4cb6-84c6-154ed0c6db17%2Fndouny_processed.jpeg&w=3840&q=75)
Transcribed Image Text:You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to
determine their concentration. The following representative information about the absorbance data were also
provided. Measurements were made in a 1.0 cm quartz cells.
Pure A (mol/l)
1.5 x 10-1
Pure B (mol/l)
Abs @510 nm
Abs @575 nm
0
0.714
0.097
0
6 x 102
0.298
0.757
Unknown conc in mixture 0.671
0.330
Unknown conc in mixture
How would you go about calculating the concentration of the two salts?
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