Artemia is monitoring the production of a colored complex with an ammine ligand, [M(NH3)]*, for her thesis. The reaction is shown below. M* + 4NH, = [M(NH3).]²* Spectral scanning of a 3.73 X 10 M standard solution produced the following data: 0.8 0.7 0.6 U.S 0.4 0.3 0.2 0.1 100 200 300 400 50 600 700 800 Wavelength (nm) The absorbance values of four other standard solutions were read at a Amax that is related to its color: Concentration (X 10$ M) Absorbance 1.55 0.1 2.15 0.21 2.58 0.287 4.27 0.604 She then prepared an unknown solution by mixing 5.00 ml of 0.005M M²* and 10.00 ml 0.01M NH3 then diluting the solution to 50.00 ml. The sample has an absorbance of 0.540. A blank solution was run before analyzing the unknown and gave an absorbance of 0.008. What is the wavelength at maximum absorption, Amax, used to read the solutions? Using the 5 standard solutions, determine the best fit line of the calibration curve include the R?. You may use excel/google sheets. Calculate the molar absorptivity coefficient of the complex (M(NH3)4]2+ at Amax using the five standard solutions given that the path length is equal to 1 cm. Calculate the equilibrium concentrations of each component in the sample solution. Calculate the Keq for the equilibrium reaction. The same experiment was done with the use of B2*. It was found that the Keg for (B(NH3)4]* is 1.526x1013. Which cation is better in complexing with the amino ligand? Explain briefly. Absorbance
Artemia is monitoring the production of a colored complex with an ammine ligand, [M(NH3)]*, for her thesis. The reaction is shown below. M* + 4NH, = [M(NH3).]²* Spectral scanning of a 3.73 X 10 M standard solution produced the following data: 0.8 0.7 0.6 U.S 0.4 0.3 0.2 0.1 100 200 300 400 50 600 700 800 Wavelength (nm) The absorbance values of four other standard solutions were read at a Amax that is related to its color: Concentration (X 10$ M) Absorbance 1.55 0.1 2.15 0.21 2.58 0.287 4.27 0.604 She then prepared an unknown solution by mixing 5.00 ml of 0.005M M²* and 10.00 ml 0.01M NH3 then diluting the solution to 50.00 ml. The sample has an absorbance of 0.540. A blank solution was run before analyzing the unknown and gave an absorbance of 0.008. What is the wavelength at maximum absorption, Amax, used to read the solutions? Using the 5 standard solutions, determine the best fit line of the calibration curve include the R?. You may use excel/google sheets. Calculate the molar absorptivity coefficient of the complex (M(NH3)4]2+ at Amax using the five standard solutions given that the path length is equal to 1 cm. Calculate the equilibrium concentrations of each component in the sample solution. Calculate the Keq for the equilibrium reaction. The same experiment was done with the use of B2*. It was found that the Keg for (B(NH3)4]* is 1.526x1013. Which cation is better in complexing with the amino ligand? Explain briefly. Absorbance
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter21: Transition Metals And Coordination Chemistry
Section: Chapter Questions
Problem 108IP: a. In the absorption spectrum of the complex ion Cr(NCS)63, there is a band corresponding to the...
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![Artemia is monitoring the production of a colored complex with an ammine ligand, [M(NH3)]²",
for her thesis. The reaction is shown below.
M2* + 4NH3 = [M(NH3)4]²*
Spectral scanning of a 3.73 X 10$ M standard solution produced the following data:
0.8
0.7
0.6
U.S
0.4
0.3
0.2
0.1
100
200
300
400
500
600
700
800
Wavelength (nm)
The absorbance values of four other standard solutions were read at a Amax that is related to
its color:
Concentration (X 105 M)
Absorbance
1.55
0.1
2.15
0.21
2.58
0.287
4.27
0.604
She then prepared an unknown solution by mixing 5.00 ml of 0.005M M2* and 10.00 ml 0.01M
NH3 then diluting the solution to 50.00 ml. The sample has an absorbance of 0.540. A blank
on was run before analyzing the unknown and gave an absorbance of 0.008.
sol
What is the wavelength at maximum absorption, Amax, used to read the solutions?
Using the 5 standard solutions, determine the best fit line of the calibration curve
include the R?. You may use excel/google sheets.
Calculate the molar absorptivity coefficient of the complex (M(NH3)4]2+ at Amax using
the five standard solutions given that the path length is equal to 1 cm.
Calculate the equilibrium concentrations of each component in the sample solution.
Calculate the Keg for the equilibrium reaction.
The same experiment was done with the use of B2*. It was found that the Keg for
(B(NH3)4]2* is 1.526x1013. Which cation is better in complexing with the amino ligand?
Explain briefly.
Absorbance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F750f3bcc-76a5-4c8a-a45d-0e0077bec446%2F6f64b80e-9a64-4968-b34a-ebb4ffb3ef05%2Ftlolm88_processed.png&w=3840&q=75)
Transcribed Image Text:Artemia is monitoring the production of a colored complex with an ammine ligand, [M(NH3)]²",
for her thesis. The reaction is shown below.
M2* + 4NH3 = [M(NH3)4]²*
Spectral scanning of a 3.73 X 10$ M standard solution produced the following data:
0.8
0.7
0.6
U.S
0.4
0.3
0.2
0.1
100
200
300
400
500
600
700
800
Wavelength (nm)
The absorbance values of four other standard solutions were read at a Amax that is related to
its color:
Concentration (X 105 M)
Absorbance
1.55
0.1
2.15
0.21
2.58
0.287
4.27
0.604
She then prepared an unknown solution by mixing 5.00 ml of 0.005M M2* and 10.00 ml 0.01M
NH3 then diluting the solution to 50.00 ml. The sample has an absorbance of 0.540. A blank
on was run before analyzing the unknown and gave an absorbance of 0.008.
sol
What is the wavelength at maximum absorption, Amax, used to read the solutions?
Using the 5 standard solutions, determine the best fit line of the calibration curve
include the R?. You may use excel/google sheets.
Calculate the molar absorptivity coefficient of the complex (M(NH3)4]2+ at Amax using
the five standard solutions given that the path length is equal to 1 cm.
Calculate the equilibrium concentrations of each component in the sample solution.
Calculate the Keg for the equilibrium reaction.
The same experiment was done with the use of B2*. It was found that the Keg for
(B(NH3)4]2* is 1.526x1013. Which cation is better in complexing with the amino ligand?
Explain briefly.
Absorbance
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