Download 102 Rev ex1 key Fall 05

Key to Review Worksheet for Exam 1 (Ch. 11-Ch. 12.4)
Chem 102, Fall 2005
1. For each of the following compounds, write the electron-dot structure (show all nonbonded electron pairs) and classify the compound as polar or nonpolar:
a) CH3SH
b) CH3CH2OH
H
H
C
S
H
H
H
Polar
H
H
C
C
H
H
O
c) C2H2
H
H
Polar
C
C
H
Nonpolar
2. Classify each of the following as an organic or inorganic compound:
a) H2SO4
b) CH2CO2H
c) CO2
In organic
Organic
Organic
3. Identify each of the following compounds by functional group:
OH
O
a)
b)
O
c)
d) H 3C
Alcohol
Ether
Ketone
O
O
H
N
e)
g)
f)
H
Aldehyde
CH
Alkyne
O
h)
NH2
OH
Carboxylic Acid
C
Amine
Amide
4. Give an example (draw the structure) for each of the following types of organic
compounds:
a) An alkene containing 3 carbons
b) An ester containing 4 carbons
O
O
c) An aromatic hydrocarbon containing 7 carbons
CH3
d) An alcohol containing 2 carbons
OH
e) An ether containing 2 carbons
O
f) An amide containing 2 carbons
O
H
N
H
g) A carboxylic acid containing 2 carbons
O
OH
5. Draw the structures for all of the constitutional isomers for each of the following
molecular formulas:
a) C4H8 (alkenes)
b) C4H10O (alcohols)
OH
OH
OH
OH
c) C4H8O2 (esters)
O
O
O
O
O
H
O
O
H
6. Classify each of the carbons in the molecule below as 1, 2, 3 or 4:
1
3
2
2
3 2
4
1
1
1
O
7. Give a name for each of the following structures:
Br
a)
b)
2,2-dimethylpropane
2-bromo-3-methylpentane
F
c)
d)
Cl
3-chloro-4-fluorohexane
2,3-dimethylpentane
e)
f)
4-isopropylheptane
3,3-dibromo-5-propyloctane
Cl
Br
Cl
g)
h)
Cl
2,2,3-trichlorobutane
4-ethyl-5-methylnonane
8. Draw the structure for each of the following names:
a) 2,3-dibromobutane
Br
Br
Br
b) 4-ethyl-3-methylheptane
c) 1,1,2,2-tetrachloroethane
Cl
Cl
Cl
Cl
d) 4-isopropyloctane
e) 3,6-dimethyl-5-propylnonane
f) 2,3,3-trimethylpentane
g) 3,4-diethylhexane