Key to Homework 1
Chapter 11 (due Tuesday 7/5)
Chem 102, Summer 2005
1. For each of the following compounds, write the electron-dot structure and classify
the compound as polar or nonpolar:
a) CH3I
b) C2H6
H
H
C
H
Polar
H
I
H
C
d) CO2
H
H
C
H
c) CH3OH
H
H
H
Non-polar
C
O
H
O
C
O
H
Polar
Non-polar
2. Give an example (draw the condensed or electron-dot structure) for each of the
following types of organic compounds:
(I am only giving one example of each, some have more than one correct answer)
a) An alcohol containing 3 carbons
OH
b) An aromatic hydrocarbon containing 8 carbons
CH3
H 3C
c) An aldehyde containing 4 carbons
O
H
d) An amine containing 2 carbons
NH2
e) A carboxylic acid containing 3 carbons
OH
O
f) An ether containing 4 carbons
O
g) An alkene containing 4 carbons
h) An ester containing 5 carbons
O
O
3. Write all the constitutional isomers (draw the condensed structures) for each of the
following molecular formulas:
a) C5H12
(alkanes)
b) C4H9Br
(haloalkanes)
Br
Br
Br
Br