Chemistry Reference
In-Depth Information
EXAMPLE 20.9
Write condensed formulas for three compounds with the molecular formula
Name these compounds.
C
5
H
12
.
Solution
CH
3
W
CH
3
W
CH
3
CH
2
CH
2
CH
2
CH
3
CH
3
CHCH
2
CH
3
CH
3
CCH
3
CH
3
Pentane
Methylbutane
Dimethylpropane
Practice Problem 20.9
Write formulas for the two compounds with
the molecular formula
C
3
H
7
Br.
Name these compounds.
In unsaturated hydrocarbons, isomerism can occur because of the position
of the double or triple bond.
EXAMPLE 20.10
Draw line formulas for two compounds with the molecular formula
C
5
H
10
hav-
ing the five carbon atoms in a continuous chain. Name them.
Solution
CH
2
“
CHCH
2
CH
2
CH
3
CH
3
CH
“
CHCH
2
CH
3
These two compounds are called 1-pentene and 2-pentene, respectively.
EXAMPLE 20.11
Draw a condensed formula for an unsaturated isomer with the molecular for-
mula
C
4
H
8
,
and with a branch. Name the compound.
Solution
CH
2
œC±CH
3
CH
3
Methylpropene
Practice Problem 20.11
Write line formulas representing all alkynes
with the molecular formula C
4
H
6
.
