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4.
Absorbance
=
molar absorptivity
*
concentration
*
length of light path (in cm)
0.75
=
molar absorptivity
*
3.8
*
10
-
4
*
1
molar absorptivity
=
2000 M
-
1
cm
-
1
5.
a.
OH
~3100 cm
−
1
~1500 cm
−
1
OH
d.
~1050 cm
−
1
~1700 cm
−
1
3
OCH
O
b.
~2900 cm
−
1
~1380 cm
−
1
~2700 cm
−
1
H
O
O
e.
~2900 cm
−
1
~1380 cm
−
1
~3100 cm
−
1
c.
3
~2900 cm
−
1
~1380 cm
−
1
~1050 cm
−
1
~3300–2500 cm
−
1
OCH
OH
O
O
6.
a.
b.
N
H
c.
NH
2
7.
absorbance
=
molar absorbtivity
*
concentration
*
length of light path (in cm)
0.76
=
1200
*
concentration
concentration
=
6.3
*
10
-
4
M
8.
OH
60
13
= 4 with 8 left over
C
4
H
12
= C
3
H
8
O
CH
3
CHCH
3
and
CH
3
CH
2
CH
2
OH
9.
A bond between a carbon and an atom of similar electronegativity breaks homolytically, whereas a bond
between a carbon and a more electronegative atom breaks heterolytically.