Chemistry 11 HL
Unit 7 / IB Topic 10.1
Organic Chemistry 1 - Practice Problems
Alkanes and Structural Isomers
1.
2.
A hydrocarbon has the molecular formula C3H8.
a)
Is this hydrocarbon an alkane? Why or why not?
b)
State the molecular formula of the next three members in the homologous series
containing C3H8.
c)
How do the chemical properties of the compounds in (b) compare?
d)
How do the physical properties of the compounds in (d) compare? Why?
Octane is an important hydrocarbon fuel, and is a major component of gasoline.
a)
What is the molecular formula for octane?
b)
There are 18 structural isomers of octane. Draw and state the IUPAC name of at
least 6 of these isomers. At least two of the isomers must have two branches.
Chemistry 11 HL
Unit 7 / IB Topic 10.1
3. Draw the complete and condensed structural formula for these compounds:
a)
ethane
b)
3-methylpentane
c)
3-ethylhexane
d)
2,3-dimethylbutane
e)
3,3-dimethylpentane
h)
3-ethyl-5-methylheptane
i)
1,1-dimethylcyclopentane
4. Identify and correct the error(s) in these names:
a)
4-methylpentane
b)
1,4-dimethylbutane
Chemistry 11 HL
Unit 7 / IB Topic 10.1
5. Name these compounds:
a)
CH3CH2CH3
c)
CH3CHCH2CH2CHCH3
|
CH3
b)
CH3CH2CH2CH2CH2CH2CH2CH3
d)
CH3CH2CHCH2CH2CH2CH3
|
|
CH3
C 2H 5
e)
f)
g)
h)
i)
j)
Chemistry 11 HL
k)
l)
m)
n)
Unit 7 / IB Topic 10.1