5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? Based on this structure, would you expect this molecule to absorb light in the visible spectrum? Why or why not? C.

Chemistry
10th Edition
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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PHOTOSYNTHETIC PIGMENTS
1.6
0.7
Qy
D
1.4
CH.
0.6
1.2
Soret
0.5
A
N-
0.4
0.8
H
COOCH3
0.3
0.6
phytyl bacteriochlorophyll a
0.2-
0.4
0.1
0.2 -
300
400
500
600
700
800
700 750 800 850 900
2 (nm)
2 (nm)
Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether.
5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis.
You can see the structure for bacteriochlorophyll a, along with its absorption spectrum.
a. What is the molecular shape around the labeled carbon atom?
b. What is the hybridization around that same carbon?
c. Based on this structure, would you expect this molecule to absorb light in the
visible spectrum? Why or why not?
Absorbance
Fluorescence (Arbitrary units)
Transcribed Image Text:PHOTOSYNTHETIC PIGMENTS 1.6 0.7 Qy D 1.4 CH. 0.6 1.2 Soret 0.5 A N- 0.4 0.8 H COOCH3 0.3 0.6 phytyl bacteriochlorophyll a 0.2- 0.4 0.1 0.2 - 300 400 500 600 700 800 700 750 800 850 900 2 (nm) 2 (nm) Figure 4.7 Absorption (left) and fluorescence (right) spectra of bacteriochlorophyll a in diethyl ether. 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see the structure for bacteriochlorophyll a, along with its absorption spectrum. a. What is the molecular shape around the labeled carbon atom? b. What is the hybridization around that same carbon? c. Based on this structure, would you expect this molecule to absorb light in the visible spectrum? Why or why not? Absorbance Fluorescence (Arbitrary units)
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