Naming Hydrocarbons
Name:
Date:
A s the number o f carbon atoms in a hydrocarbon molecule
5)
Which formula is an isomer o f butane?
increases, the number o f possible isomers generally
2)
A)
remains the same
B)
increases
Q
decreases
H—
A)
Qven the c o n p o u n d s :
CH3CH2CH2CH3 a n d CHsCHCHs
CH3
These conpounds are both
3)
A)
isomers of propane
B)
aUcenes
C)
alkynes
D)
isomers o f butane
GSven the organic c o n p o u n d :
H
I
•C-
Write the molecular formula for 1-butyne.
(b)
In the boxbelow, draw the structural formula for
H
H
H — C —H
I
H
B)
H
H H
I
i
I
C=C—C —C — H
I
I I
I
H H H H
Q
H H H
I
I I
H—C—C —C—H
i
I I
H H H
D)
H—C—H
H
H
I
I
•C •H
H- •C
I
H
H
H—C—H
1-butyne
(a)
H
i
•C—H
1-butyne.
H
6)
The msmbers o f the alkane series o f hydrocarbons are
similar in that each member has the same
4)
W h i c h formula represents a molecule o f a saturated
hydrocarbon?
A)
C4H10
C)
C6H6
B)
C5H8
D)
C2H2
7)
8)
A)
molecular formula
C)
general formula
B)
structural formula
D)
empirical formula
I f two compounds are isomers, they must have the same
A)
percent conposition
B)
vapor pressure
Q
boiling point
D)
structure
Which alkane has isomers?
A)
methane
C)
ethane
B)
propane
D)
butane
9)
W h i c h stmctural formula correctly represents 2-butene?
13)
H
I
H —C —H
H H H H
I
I
i
I
A ) H—C~C = C —C —H
I
I
H
H
B)
C)
Which structural formula represents 2-pentyne?
A ) H —C —C —C—H
H
H
H —C —H
I
H
H H
I
I
H—C = C —C —C —H
I
I
H H
H
B)
H —C—C = C —C —H
H H H H
I
I
I I
D) H—C = C —C —C—H
Q
H H
i I
H—C—CSC —C—C—H
I
I I
H H
H
O)
H H H
I
H —C —C = C I
C- 0—H
I I
H H
H H
i
H
Which hydrocarbon has more than one possible structural
formula?
11)
12)
H—C—C—C — C - H
I
I
H H
H —C —H
I
H
H
•c-
10)
A)
C4H10
C)
B)
CH4
D ) C3H8
C2H6
Which conpound is an isomer o f pentane?
A)
butane
Q
B)
methyl butane
D ) propane
nKthyl propane
14)
The enpirical formula o f a c o n p o u n d is CH2. W h i c h
nx)lecular formula is correctly paired with a structural
formula for this corr5>ound?
Molecules o f 2-methyl butane and 2,2-dimethyl propane
have different
A)
numbers o f carbon atoms
B)
numbers o f covalent bonds
C)
structural formulas
D)
molecular formulas
H H
A)
C3H8,
H H H
I
I
I
H —C=C —C —H
H
H H
H—C=C—H
B)
C2H4,
Q
C2H4,
I
H
H—C—C—H
I
I
H H
H
D)
C3H8,
I
H
H
H
1
H —C —C —-C —H
c- - c - 1
11 H 1
H
H
1
1
1
1
15)
Which compound has an isomer?
A)
B)
16)
20)
17)
H H H
I
I
I
H —C —C' •c- H
I
I
I
H H
H
18)
H H H H
I
I
I I
H —C —C —C —C —H
I
I
I i
H H H H
Q
H—
D)
H H
I
I
H- C - C - H
I
I
H H
In saturated hydrocarbons, carbon atoms are bonded to
each other by
A)
alternating double and triple covalent bonds
B)
single covalent bonds, only
C)
alternating single and double covalent bonds
D)
double covalent bonds, only
In the alkane family, each member differs from the preceding
member by one carbon atom and two hydrogen atoms. Such
a series of hydrocarbons is called
A)
19)
•H
a periodic series
B)
a homologous series
C)
an actinide series
D)
a lanthanide series
Qven the structural formula for butane:
H H H H
I I I !
H—C —C —C —C —H
I
I
I I
H H H H
In the boxbelow, draw the structural fommla o f an isomer o f
butane.
All organic conpounds must contain the element
A)
phosphorus
C)
oj^gen
B)
carbon
D)
nitrogen
Q v e n the organic compound:
hexane
(a)
Write the molecular formula for hejane.
(b)
In the boxbelow, draw the structural formula for « - h e x a n e .
/rhexane
isomer of /rhexane
(c)
T o what h o m o l o g o u s series o f hydrocarbons does hexane belong?
(d)
I n the b o x a b o v e , draw the structural formula for one possible isomer o f « - h e x a n e .
(e)
W r i t e the l U P A C n a m e for the isomer o f « - h e x a n e drawn in
part (d).