Absorbance Questions 2-4 refer to the absorption spectrum for a 0.80M solution of metal M and a calibration curve for the metal M2 collected in a 1.5 cm cuvette, shown in Figures 2 and 3. 60 0.7 0.5 9'0 vo 0.3 zo zo 00 Wavelength (nm) 00 1.2 009 000 R0 9'0 [M2+] (M) Figure 2. Absorption spectrum of 0.80 M M2+ Figure 3. Calibration curve for M2 2. At what wavelength was the calibration curve obtained? Use the data from both graphs to explain your choice. 3. Would the value of the molar absorptivity (E) be greater, lesser or equal for M2 for the absorbance of light at 400. nm vs. 650. nm. Use the data from Figure 2 to explain your choice. Using the calibration curve in Figure 3: A sample of a solution of unknown concentration of M2* has an absorbance reading that is "off scale" because the absorbance was measured to be above 0.8. You dilute this sample by adding 5.0 mL of water to 1.0 mL of the solution of M2 The absorbance of the diluted solution was determined to be 0.35 at the same wavelength used for the calibration curve. What is the concentration of M2, in M, of the original undiluted sample?
Absorbance Questions 2-4 refer to the absorption spectrum for a 0.80M solution of metal M and a calibration curve for the metal M2 collected in a 1.5 cm cuvette, shown in Figures 2 and 3. 60 0.7 0.5 9'0 vo 0.3 zo zo 00 Wavelength (nm) 00 1.2 009 000 R0 9'0 [M2+] (M) Figure 2. Absorption spectrum of 0.80 M M2+ Figure 3. Calibration curve for M2 2. At what wavelength was the calibration curve obtained? Use the data from both graphs to explain your choice. 3. Would the value of the molar absorptivity (E) be greater, lesser or equal for M2 for the absorbance of light at 400. nm vs. 650. nm. Use the data from Figure 2 to explain your choice. Using the calibration curve in Figure 3: A sample of a solution of unknown concentration of M2* has an absorbance reading that is "off scale" because the absorbance was measured to be above 0.8. You dilute this sample by adding 5.0 mL of water to 1.0 mL of the solution of M2 The absorbance of the diluted solution was determined to be 0.35 at the same wavelength used for the calibration curve. What is the concentration of M2, in M, of the original undiluted sample?
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Please answer question number 4 and show all work explaining how you got the answer. thank you
![Absorbance
Questions 2-4 refer to the absorption spectrum for a 0.80M solution of metal M
and a
calibration curve for the metal M2 collected in a 1.5 cm cuvette, shown in Figures 2
and 3.
60
0.7
0.5
9'0
vo
0.3
zo
zo
00
Wavelength (nm)
00
1.2
009
000
R0
9'0
[M2+] (M)
Figure 2. Absorption spectrum of 0.80 M M2+
Figure 3. Calibration curve for M2
2. At what wavelength was the calibration curve obtained? Use the data from both
graphs to explain your choice.
3. Would the value of the molar absorptivity (E) be greater, lesser or equal for M2 for the
absorbance of light at 400. nm vs. 650. nm. Use the data from Figure 2 to explain
your choice.
Using the calibration curve in Figure 3: A sample of a solution of unknown
concentration of M2* has an absorbance reading that is "off scale" because the
absorbance was measured to be above 0.8. You dilute this sample by adding 5.0 mL
of water to 1.0 mL of the solution of M2 The absorbance of the diluted solution was
determined to be 0.35 at the same wavelength used for the calibration curve. What is
the concentration of M2, in M, of the original undiluted sample?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F16cc15fb-81a0-46e3-96f0-13be73eaad53%2F594c069f-18ec-411d-9ea5-17839c2ba352%2F36tb35zm.png&w=3840&q=75)
Transcribed Image Text:Absorbance
Questions 2-4 refer to the absorption spectrum for a 0.80M solution of metal M
and a
calibration curve for the metal M2 collected in a 1.5 cm cuvette, shown in Figures 2
and 3.
60
0.7
0.5
9'0
vo
0.3
zo
zo
00
Wavelength (nm)
00
1.2
009
000
R0
9'0
[M2+] (M)
Figure 2. Absorption spectrum of 0.80 M M2+
Figure 3. Calibration curve for M2
2. At what wavelength was the calibration curve obtained? Use the data from both
graphs to explain your choice.
3. Would the value of the molar absorptivity (E) be greater, lesser or equal for M2 for the
absorbance of light at 400. nm vs. 650. nm. Use the data from Figure 2 to explain
your choice.
Using the calibration curve in Figure 3: A sample of a solution of unknown
concentration of M2* has an absorbance reading that is "off scale" because the
absorbance was measured to be above 0.8. You dilute this sample by adding 5.0 mL
of water to 1.0 mL of the solution of M2 The absorbance of the diluted solution was
determined to be 0.35 at the same wavelength used for the calibration curve. What is
the concentration of M2, in M, of the original undiluted sample?
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