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Answers to Chapter 14 Practice Test
1.
4
NO
2
3
CH
3
3
CH
2
CHCH
2
CH
3
3
Cl
3
Cl
Cl
4
CH
3
CHCH
2
CHCH
3
CH
3
CH
3
3
CH
2
CH
CH
3
CH
2
CH
2
CH
C
O
H
C
O
2.
CH
3
CH
2
CCH
3
NO
2
O
quartet
H
triplet
2
C C
Cl
H
H
H
doublet of
doublets
BrCH
2
CH
2
Br
CH
3
CHCH
2
Cl
doublet
CH
3
singlet
CH
3
OCH CH
2
CH
2
OCH
3
quintet
CH
3
CH
2
OCH
2
CH
3
triplet
ClCH
2
CH
2
CH
2
OCH
3
multiplet
O
C
3.
3
signals
The signal at the highest
frequency (farthest
down eld) is a quartet.
3
signals
The signal at the highest
frequency (farthest
down eld) is a singlet.
CH
2
CH
3
4
signals
CH
3
CH
3 2
OCH
C
O
3
OCH
CH
2 3
CH
C
O
2
OCH
H
C
O
4.
a.
The signals on the right of an NMR spectrum are deshielded compared to the signals on the left.
F
b.
Dimethyl ketone has the same number of signals in its
1
H
NMR spectrum as in its
13
C
NMR
spectrum.
F
c.
In the
1
H
NMR spectrum of the compound shown below, the lowest-frequency signal
(the one farthest upfield) is a singlet and the highest-frequency signal (the one farthest
downfield) is a doublet.
T
O
2
N
CH
3
d.
The greater the frequency of the signal, the greater its chemical shift in ppm.
T