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470 Chapter 14
Copyright © 2017 Pearson Education, Inc.
47.
a. 1.
5
2.
5
3.
4
4.
2
5.
3
6.
3
b. 1.
7
2.
7
3.
5
4.
2
5.
2
6.
4
48.
The
H
b
proton will be split into a quartet by the
H
a
protons and into a doublet by the
H
c
protons.
a.
J
ba
J
bc
ve peaks (a quintet)
b.
J
ba
J
bc
eight peaks (a doublet of quartets)
49.
a.
d
a
septet
b
CH
3
CHNO
2
CH
3
a
b.
t
a
m
b
CH
3
CH
2
CH
2
OCH
3
t
d
s
c
c.
CH
3
CH CH
2
CH
2
CH
3
O
CH
3
a
b e
c d
b
d septet
t m t
d.
CH
3
CH
2
CH
2
CH
2
Cl
O
a b c
d
t m
t
s
e.
s
b
ClCH
2
CCHCl
2
CH
3
CH
3
s
a
a
c
s
f.
t
c
ClCH
2
CH
2
CH
2
CH
2
CH
2
Cl
m
b
quintet
a b c
50.
By dividing the value of the integration steps by the smallest one, the ratios of the hydrogens are found to
be 3:2:1:9.
40.5
13
=
3.1
27
13
=
2.1
13
13
=
1
118
13
=
9.1
Because the ratios are given in the highest frequency to lowest frequency direction, a possible compound is
the following ester:
CH
3
CH
3
C
CH
3
CH
3
OCH
3
O
CH
C