#1
Which of the following statements about alkenes is true?
They contain only single bonds between carbon atoms.
They contain at least one triple bond between carbon atoms.
They contain at least one double bond between carbon atoms.
They contain only triple bonds between carbon atoms.
#2
What is the general formula for alkenes?
#3
Which reagent is commonly used to convert alkenes to alcohols?
#4
What is the product of the reaction between propene and HBr?
1-bromopropane
2-bromopropane
1,2-dibromopropane
3-bromopropane
#5
What is the IUPAC name for the alkene with the molecular formula C4H8?
But-1-ene
But-2-ene
But-1-yne
But-2-yne
#6
Which of the following is NOT a method for the synthesis of alkenes?
Dehydrohalogenation of alkyl halides
Dehydration of alcohols
Deamination of amines
Dehalogenation of alkyl halides
#7
Which compound would be expected as the major product in the following reaction? CH3CH2CH=CH2 + HBr
1-bromobutane
2-bromobutane
1-bromo-2-butene
2-bromo-2-butene
#8
What is the name of the reaction that converts an alkene into an alcohol using aqueous acid and mercuric sulfate?
Hydroboration-oxidation
Hydrogenation
Halogenation
Hydration
#9
Which of the following is a correct statement about the stability of alkenes?
Alkenes with more substituted double bonds are generally less stable.
Alkenes with more substituted double bonds are generally more stable.
The stability of alkenes is not influenced by substitution.
The stability of alkenes depends solely on the size of the molecule.
#10
What is the major product of the following reaction? CH3CH=CH2 + H2, Pt catalyst
CH3CH2CH2CH3
CH3CH2CH3
CH3CH2CH=CH2
CH3CH2CH=CHCH3
#11
Which of the following reagents can be used to convert an alkene into an alkane?
#12
What is the product of the reaction between ethene and chlorine gas (Cl2) in the presence of sunlight?
Ethane
1,2-dichloroethane
1,1-dichloroethane
Chloroethane
#13
What is the major product of the following reaction? CH3CH=CH2 + HCl, H2O
CH3CH(Cl)CH3
CH3CH(OH)CH3
CH3CH2CH2Cl
CH3CH2CH2OH
#14
What is the name of the reaction that converts an alkene into a diol using cold, dilute potassium permanganate (KMnO4)?
Hydroboration-oxidation
Ozonolysis
Epoxidation
Oxidative cleavage
#15
Which of the following factors affects the rate of electrophilic addition to alkenes?
Nature of the alkene
Temperature
Concentration of the electrophile
All of the above
#16
What is the major product of the following reaction? CH2=CH-CH2-CH3 + HBr
1-bromobutane
2-bromobutane
1-bromo-2-butene
2-bromo-2-butene
#17
Which of the following reactions does NOT typically involve alkenes?
Hydrogenation
Halogenation
Oxidation
Substitution
#18
What is the stereochemistry of the product formed when cis-2-butene undergoes catalytic hydrogenation?
Cis-2-butane
Trans-2-butane
n-Butane
Both a and b
#19
Which of the following is NOT a characteristic of the E2 mechanism?
It is a one-step process
It proceeds via a carbocation intermediate
It is stereospecific
It is favored by bulky bases
#20
In which of the following reactions does an alkene act as a nucleophile?
Electrophilic addition
Nucleophilic addition
Electrophilic substitution
Nucleophilic substitution
#21
What type of reaction is the ozonolysis of alkenes?
Reduction
Oxidation
Isomerization
Cleavage
#22
Which of the following is a correct statement regarding the stability of carbocations formed during the addition of HX to an alkene?
Tertiary carbocations are more stable than secondary carbocations.
Secondary carbocations are more stable than primary carbocations.
Primary carbocations are more stable than secondary carbocations.
The stability of carbocations is not influenced by the structure of the alkene.
#23
Which of the following is NOT an example of a polymerization reaction involving alkenes?
Polymerization of ethene to form polyethylene
Polymerization of propene to form polypropylene
Polymerization of styrene to form polystyrene
Polymerization of ethene to form polyvinyl chloride (PVC)
#24
What is the product of the reaction between propene and hot, concentrated sulfuric acid (H2SO4)?
Propanol
Propene oxide
Propylene glycol
Propyl hydrogen sulfate
#25
Which of the following is a correct statement about the mechanism of electrophilic addition to alkenes?
It involves the attack of a nucleophile on an electrophile.
It proceeds via the formation of a carbocation intermediate.
It is a stepwise process.
It is favored by bulky nucleophiles.