Assignment of IR frequencies - assign the IR frequencies that best correspond to the actual frequencies, for the different functional groups, shown below. Functional Groun Actual F
Assignment of IR frequencies - assign the IR frequencies that best correspond to the actual frequencies, for the different functional groups, shown below. Functional Groun Actual F
Chemistry
10th Edition
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
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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Question
5
Transcribed Image Text:Sp2022 3
110
%T
100
90
80
70-
60
50
40
30
4000
3500
3000
2500
2000
1750
1500
1250
1000
750
cm-1
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Item
Value
Sample name
3
2
Sample ID
Option
15
Intensity Mode
Apodization
9
Transmittance
None
No. of Scans
3386,73-
1686.22
1683.36
1604,76
L1456.15-
1304.68
1293.24
1218.94
1134.62
1094.61
1011.73-
968.86
838.82-
803.10
790.24
66 6
753.08
703.07
665.91
657.34
610.18
Transcribed Image Text:Assignment of IR frequencies
assign the IR frequencies that best correspond to the actual frequencies, for the different functional groups, shown below.
Functional Group
Actual Frequencies (cm²l)
Exp. Frequencies (em²lh!
a. ester (C=O)
1754 (sXsh)
b. carboxyl group (C=O)
1697 (s)(sh)
c. carboxyl group (0-H)
2990 (s)(br).
d. phenyl group
1457 (s)(sh)
1605 (m)(sh)
based on the IR spectra of your sample
* Note: the main identifier is the frequency value the following informadon about the peak type is not pertinent in peak classification.
() -strong, (m)-medium, and (w)-weak refer to the intensity of the peak( all relative to other peaks in spectra)
(sh)- sharp and (br)-borad - refer to the shape of the peak. If peak is not either (sh) or (br) do not need to include this.
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