PRE-LAB ASSIGNMENT The electronic absorption [Cr(NH3)6]3*(aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. spectrum of 1.a. What is the approximate value of the wavelength for the two other peaks? b. Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the
PRE-LAB ASSIGNMENT The electronic absorption [Cr(NH3)6]3*(aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. spectrum of 1.a. What is the approximate value of the wavelength for the two other peaks? b. Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the
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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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![PRE-LAB ASSIGNMENT
The
electronic
absorption
[Cr(NH3)6]*(aq) is shown in Figure 11.5. One of the.
observed peaks is centered at about 303 nm.
spectrum
of
1.a.
What is the approximate value of the
wavelength for the two other peaks?
Which one of these three peaks falls in the
visible region of the electromagnetic
spectrum? The wavelength at this peak is
(Amax), and this transition accounts for the
color of the complex ion in solution.
The energy of the transition occurring at Amax
equals the energy difference between t" and
e* molecular orbitals in this complex (Ao)
(Figure 11.1). Calculate this energy in J.
What color is a solution containing this
complex ion? (see Table 11.1)
How many d-electrons are in the Cr3+ ion?
b.
С.
d.
e.
Add to this the number of electrons
contributed by ligands (six ligands contribute
2 electrons each).
Using Figure 11.1,
determine the electronic configuration of
[Cr(NH3)6]3*.
Electronic Absorption Spectrum
0.200
0.150
0.100
0.050
0.000
200
250
300
350
400
450
500
550
600
Figure 11.5 Electronic absorption spectrum
of [Cr(NH3)6]**(aq)
Absorbance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2a5aa0bc-d94d-4d01-ab2c-c04b0fc8f322%2F6e125b8a-3afb-4a9f-8281-44a64397045b%2Flsqh5is_processed.jpeg&w=3840&q=75)
Transcribed Image Text:PRE-LAB ASSIGNMENT
The
electronic
absorption
[Cr(NH3)6]*(aq) is shown in Figure 11.5. One of the.
observed peaks is centered at about 303 nm.
spectrum
of
1.a.
What is the approximate value of the
wavelength for the two other peaks?
Which one of these three peaks falls in the
visible region of the electromagnetic
spectrum? The wavelength at this peak is
(Amax), and this transition accounts for the
color of the complex ion in solution.
The energy of the transition occurring at Amax
equals the energy difference between t" and
e* molecular orbitals in this complex (Ao)
(Figure 11.1). Calculate this energy in J.
What color is a solution containing this
complex ion? (see Table 11.1)
How many d-electrons are in the Cr3+ ion?
b.
С.
d.
e.
Add to this the number of electrons
contributed by ligands (six ligands contribute
2 electrons each).
Using Figure 11.1,
determine the electronic configuration of
[Cr(NH3)6]3*.
Electronic Absorption Spectrum
0.200
0.150
0.100
0.050
0.000
200
250
300
350
400
450
500
550
600
Figure 11.5 Electronic absorption spectrum
of [Cr(NH3)6]**(aq)
Absorbance
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