1. A pair of small peaks such as these can be seen at the base of every large resonance in the spectrum (Figure 1). What are they due to? a) Poor shimming b) H-H coupling c) 13C-H coupling d) Spinning sideband 126 Hz Figure 1 Figure 2 2. The baseline in the spectrum at right looks twisted. What is this due to? a) Poor shimming b) Improper phasing c) Impure sample d) Incorrect shift reference
1. A pair of small peaks such as these can be seen at the base of every large resonance in the spectrum (Figure 1). What are they due to? a) Poor shimming b) H-H coupling c) 13C-H coupling d) Spinning sideband 126 Hz Figure 1 Figure 2 2. The baseline in the spectrum at right looks twisted. What is this due to? a) Poor shimming b) Improper phasing c) Impure sample d) Incorrect shift reference
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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( do 1 with explanation)
![1. A pair of small peaks such as these can be seen at the base of every large resonance in the
spectrum (Figure 1). What are they due to?
a) Poor shimming
b) H-H coupling
c) 13C-H coupling
d) Spinning sideband
126 Hz
Figure 1
Figure 2
2. The baseline in the spectrum at right looks twisted. What is this due to?
a) Poor shimming
b) Improper phasing
c) Impure sample
d) Incorrect shift reference
3. This H spectrum exhibits resonances at the following chemical shifts, and with these
integrated areas. The molecular formula of the compound işHÇCIO. Identify the compound.
Figure 3
Shift (ppm)
Area
7.45
0.10](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F05e60516-e7cf-4dc2-b208-123bf443d03f%2F376311cd-1cf2-42ac-bd84-f03fcb212731%2Fzliwlp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. A pair of small peaks such as these can be seen at the base of every large resonance in the
spectrum (Figure 1). What are they due to?
a) Poor shimming
b) H-H coupling
c) 13C-H coupling
d) Spinning sideband
126 Hz
Figure 1
Figure 2
2. The baseline in the spectrum at right looks twisted. What is this due to?
a) Poor shimming
b) Improper phasing
c) Impure sample
d) Incorrect shift reference
3. This H spectrum exhibits resonances at the following chemical shifts, and with these
integrated areas. The molecular formula of the compound işHÇCIO. Identify the compound.
Figure 3
Shift (ppm)
Area
7.45
0.10
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