Practice Problems Test #1
1. Identify the number of tertiary carbons in the following structure:
Two carbons : CH’s
2. Give the name for the following compound:
a. 2-bromo-3,3-dimethylpentane
b. 1-bromo-3,3-dimethylhexane
c. 1-bromo-3,3-dimethylpentane
d. 5-bromo-3,3-dimethylpentane
3. Give the name for the following compound:
a. 1,4-diethyl-2-propylcycloheptane
b. 1,4-diethyl-2-propylcyclohexane
c. 1,4-diethyl-3-propylcycloheptane
d. 1-ethyl-4-methyl-2-propylcycloheptane
,4. Name the following compound:
a. 7-cyclopentyl-5-ethyl-4-methylheptane.
b. 1-cyclopentyl-3-ethyl-4-propylpentane.
c. 1-cyclopentyl-4-ethyl-3-methylheptane
d. 1-cyclopentyl-3-ethyl-4-methylheptane
5. Cyclohexane is composed of:
3
a. six identical groups with sp hybridized secondary carbon atoms.
b. six identical groups containing secondary carbon atoms all oriented in the
same plane.
3
c. three groups containing sp hybridized carbon atoms and three groups
containing sp2carbon atoms forming a puckered conformation.
d. Identify the type of radical reaction in the example below.
e. CH3CH2CH2CH2· + Cl2 → CH3CH2CH2CH2Cl + Cl·
initiation
propagation
termination
This is not a radical reaction.
In the following compound, which hydrogens would react the fastest in a free radical
halogenation reaction?
, hydrogens on carbon 4
hydrogens on carbon 1
hydrogens on carbon 3.
hydrogens on carbon 2
Identify the type of radical in the structure listed below.
CH3CH2CH2CH2+
2° radical.
1° radical.
0° radical.
3° radical.
The formation of ethyl chloride from ethane and chlorine represents what type of
reaction?
substitution
cracking
hydrogenation
combustion
decomposition
, The activation energy is
the amount of energy released when a reaction occurs.
the amount of heat required to make a reaction proceed.
the minimum amount of kinetic energy required for an effective collision to
occur.
the potential energy required for a reaction to occur.
None of these is correct.
The purpose of a catalyst in a reaction is
to provide additional energy to a reaction.
to lower the activation energy by creating a new transition state.
to lower the amount of heat given off by a reaction.
make reactions only one step.
None of these is the function of a catalyst.
What is a termination reaction?
A reaction that initiates a reaction.
A reaction that consumes a catalyst.
A reaction that produces reactive intermediates.
A reaction that produces fewer reactive intermediates than it consumes.
None of these defines a termination reaction.
1. Identify the number of tertiary carbons in the following structure:
Two carbons : CH’s
2. Give the name for the following compound:
a. 2-bromo-3,3-dimethylpentane
b. 1-bromo-3,3-dimethylhexane
c. 1-bromo-3,3-dimethylpentane
d. 5-bromo-3,3-dimethylpentane
3. Give the name for the following compound:
a. 1,4-diethyl-2-propylcycloheptane
b. 1,4-diethyl-2-propylcyclohexane
c. 1,4-diethyl-3-propylcycloheptane
d. 1-ethyl-4-methyl-2-propylcycloheptane
,4. Name the following compound:
a. 7-cyclopentyl-5-ethyl-4-methylheptane.
b. 1-cyclopentyl-3-ethyl-4-propylpentane.
c. 1-cyclopentyl-4-ethyl-3-methylheptane
d. 1-cyclopentyl-3-ethyl-4-methylheptane
5. Cyclohexane is composed of:
3
a. six identical groups with sp hybridized secondary carbon atoms.
b. six identical groups containing secondary carbon atoms all oriented in the
same plane.
3
c. three groups containing sp hybridized carbon atoms and three groups
containing sp2carbon atoms forming a puckered conformation.
d. Identify the type of radical reaction in the example below.
e. CH3CH2CH2CH2· + Cl2 → CH3CH2CH2CH2Cl + Cl·
initiation
propagation
termination
This is not a radical reaction.
In the following compound, which hydrogens would react the fastest in a free radical
halogenation reaction?
, hydrogens on carbon 4
hydrogens on carbon 1
hydrogens on carbon 3.
hydrogens on carbon 2
Identify the type of radical in the structure listed below.
CH3CH2CH2CH2+
2° radical.
1° radical.
0° radical.
3° radical.
The formation of ethyl chloride from ethane and chlorine represents what type of
reaction?
substitution
cracking
hydrogenation
combustion
decomposition
, The activation energy is
the amount of energy released when a reaction occurs.
the amount of heat required to make a reaction proceed.
the minimum amount of kinetic energy required for an effective collision to
occur.
the potential energy required for a reaction to occur.
None of these is correct.
The purpose of a catalyst in a reaction is
to provide additional energy to a reaction.
to lower the activation energy by creating a new transition state.
to lower the amount of heat given off by a reaction.
make reactions only one step.
None of these is the function of a catalyst.
What is a termination reaction?
A reaction that initiates a reaction.
A reaction that consumes a catalyst.
A reaction that produces reactive intermediates.
A reaction that produces fewer reactive intermediates than it consumes.
None of these defines a termination reaction.
