Deck 13: Unsaturated Hydrocarbons

Question 1

The compound levonorgestrel,shown below,contains several different functional groups which allow it to be classified as more than one type of organic compound. Which compound classification type for levonorgestrel is incorrect?

A)Alcohol
B)Alkene
C)Alkyne
D)Ketone
E)Aromatic

Answer 1

Aromatic

Question 2

Which is NOT a valid IUPAC name of an alkene?

A)2,3-dimethyl-3-hexene
B)1-butene
C)1-ethylcyclopentene
D)2-butyl-3-methyl-2-nonene

Answer 2

2-butyl-3-methyl-2-nonene

Question 3

What is the IUPAC name of the following compound?

A)1-ethyl-3-methylcyclohexene
B)1-ethyl-5-methylcyclohexene
C)2-ethyl-4-methylcyclohexene
D)3-ethyl-1-methylcyclohexene

Answer 3

1-ethyl-5-methylcyclohexene

Question 4

The compounds 1-pentene and cis-2-pentene are an example of a pair of ________.

A)isotopes
B)stereoisomers
C)constitutional isomers
D)identical molecules

Question 5

The molecules cis-2-pentene and trans-2-pentene are an example of a pair of ________.

A)isotopes
B)stereoisomers
C)constitutional isomers
D)identical molecules

Question 6

Which fatty acid has the highest melting point?

A)CH₃(CH₂)₁₂COOH
B)CH₃(CH₂)₂CH=CH(CH₂)₈COOH
C)CH₃(CH₂)₂CH=CH(CH₂)₂CH=CH(CH₂)₄COOH
D)CH₃(CH₂)₁₄COOH

Question 7

Which is the molecular formula of an alkyne?

A)C₁₀H₁₈
B)C₉H₁₈
C)C₈H₁₈
D)C₁₀H₂₀

Question 8

What is the product of the reaction 2-pentene + H₂ ?

A)Pentane
B)2-pentane
C)Ethane + propane
D)2-pentyne

Question 9

Which fatty acid has the lowest melting point?

A)CH₃(CH₂)₅CH=CH(CH₂)₇COOH
B)CH₃(CH₂)₆COOH
C)CH₃(CH₂)₄CH=CHCH₂CH=CH(CH₂)₇COOH
D)CH₃(CH₂)₂₄COOH

Question 10

What is the IUPAC name of this compound?

A)Methylbenzene
B)2-methyl-1,3-cyclohexadiene
C)3-methyl-1,3-cyclohexadiene
D)1-methyl-1,2-cyclohexadiene
E)Toluene

Question 11

What is the IUPAC name for the compound CH₃CH=CHCH₂CH₃?

A)Pentene
B)2,3-pentene
C)3-pentene
D)2-pentene

Question 12

Which name is a valid IUPAC name of an unsaturated hydrocarbon?

A)2,3-dimethyl-3-hexyne
B)Trans-1-hexene
C)Trans-3-pentyne
D)5-butylcyclohexene
E)2-methyl-2-butene

Question 13

What is the IUPAC name of this compound? CH₂ = CHCH₂CH₂CH₂C(CH₃)₃

A)6,6-dimethyl-2-hexene
B)2,2-dimethyl-6-heptene
C)6,6-dimethyl-1-heptene
D)6,6,6-trimethyl-1-hexene

Question 14

What configuration of a double bond is more common in naturally occurring fatty acids?

A)Cis
B)Trans
C)Cis and trans are equally likely to occur.
D)Double bonds to not naturally occur in fatty acids.

Question 15

What product is formed from the reaction below?

A)
B)
C)
D)

Question 16

What is the IUPAC name of this compound?

A)5-ethyl-4-methyl-4-heptene
B)3-ethyl-4-methyl-3-hexene
C)3-ethyl-4-methyl-4-heptene
D)3-ethyl-4-methyl-3-heptene
E)3-ethyl-4-propyl-2-pentene

Question 17

What is the structure of 3-methylcycloheptene?

A)
B)
C)
D)

Question 18

What is the structure of 2-methyl-3-hexene?

A)
B)
C)(CH₃)₂C=CHCH₂CH₂CH₃
D)(CH₃)₂CHCH=CHCH₂CH₃

Question 19

Which structure is trans-3-hexene?

A)
B)
C)
D)

Question 20

What is the IUPAC name of this compound?

A)cis-3-pentene
B)cis-2-pentene
C)Ethylpropene
D)1-methyl-2-ethylpentene
E)Trans-3-pentene

Question 21

What product results when benzene undergoes the chlorination reaction below?

A)
B)
C)
D)

Question 22

What monomer is used to form the polymer below?

A)
B)
C)
D)

Question 23

What product is formed in the reaction below?

A)
B)
C)
D)

Question 24

What reagent (and catalyst,if necessary)is needed to convert 2-methyl-2-pentene to the compound below?

A)H₂SO₄
B)H₂O,H₂SO₄
C)CH₃OH,H₂SO₄
D)H₂O
E)CH₃OH

Question 25

How many different products are formed in the reaction of p-dibromobenzene with Cl₂,using FeCl₃ as a catalyst?

A)1
B)2
C)3
D)4

Question 26

How many different products are formed in the hydrogenation reaction of 2-pentene?

A)1
B)2
C)3
D)None; 2-pentene does not undergo hydrogenation.

Question 27

What starting material in a hydrochlorination reaction would produce the compound below?

A)
B)
C)
D)

Question 28

Which synthetic polymer is not one of the six compounds,called the "Big Six," that account for 76% of the synthetic polymers produced in the United States each year?

A)Polyethylene terephthalate (PET)
B)Polystyrene (PS)
C)Polytetrafluoroethylene (Teflon)
D)High-density polyethylene (HDPE)
E)Polypropylene (PP)

Question 29

What is the structure of ortho-dichlorobenzene?

A)
B)
C)
D)

Question 30

How many different products are formed in the hydration reaction of 2-pentene?

A)1
B)2
C)3
D)None; 2-pentene does not undergo hydration.

Question 31

What is the IUPAC name for the compound below?

A)O-bromomethylbenzene
B)M-bromotoluene
C)2-bromo-6-methylbenzene
D)O-bromophenol

Question 32

What is the correct abbreviation for Poly(vinyl chloride)used in floor mats?

A)PP
B)PC
C)PS
D)PVC
E)LDPF

Question 33

What is the IUPAC name of the compound below?

A)1,3-dichloro-2-oxybenzene
B)1,3-dichloro-2-hydroxylbenzene
C)2,6-dichlorophenol
D)1,5-dichlorophenol

Question 34

What product is formed in the hydration reaction shown below?

A)
B)
C)
D)

Question 35

What is the structure of aniline?

A)
B)
C)
D)

Question 36

What is the structure of anthracene?

A)
B)
C)
D)

Question 37

Which Recycling code indicates that a polymer is easier to recycle?

A)A low number
B)A high number
C)An even number
D)An odd number
E)Recycling codes do not indicate easy of recyclability.

Question 38

What product is formed from the reaction below?

A)
B)
C)
D)

Question 39

What product is formed in the hydration reaction shown below?

A)
B)
C)
D) CH₃CH₂CH₂CH₂CH₂C(CH₃)₃

Question 40

What starting material in a hydrobromination reaction would produce the compound CH₃CH₂CH₂Br?

A)CH₃CH₂=CH₂
B)CH₃CH₂CH₃
C)CH₃CH₂CH₂OH
D)

Question 41

How many different products are formed in the reaction of m-dibromobenzene with Cl₂,using FeCl₃ as a catalyst?

A)1
B)2
C)3
D)4

Question 42

What product is formed when the benzene is treated with HNO₃ and H₂SO₄?

A)
B)
C)
D)
E)All would be effective.

Question 43

What product results when cyclopentene undergoes the halogenation reaction shown?

A)
B)
C)
D)

Question 44

Which term correctly describes the relative position of the two substituents on the benzene ring in the compound below?

A)Trans
B)Ortho
C)Para
D)Meta

Question 45

Fats are solids at room temperature and are generally formed from fatty acids having a large number of double bonds in their carbon chains.

Question 46

The addition of water to an alkene is called a hydrogenation reaction.

Question 47

Essential fatty acids cannot be synthesized by the human body and therefore must be obtained in the diet.

Question 48

What product results when 1-heptene undergoes the halogenation reaction shown?

A)
B)
C)
D)

Question 49

What is the IUPAC name of the compound below?

A)5-amino-1,3-dichloro-4-pentylbenzene
B)3,5-dichloro-2-pentylaniline
C)1,3-dichloro-5-nitro-4-pentylbenzene
D)3,5-dichloro-2-pentane aminobenzene
E)2,4-dichloro-1-pentylaniline

Question 50

Which term correctly describes the relative position of the two substituents on the benzene ring in the compound below?

A)Cis
B)Ortho
C)Para
D)Meta

Question 51

Which set of reagents would be required to convert benzene in to chlorobenzene?

A)H₂,Pd
B)H₂O,H₂SO₄
C)HCl
D)Cl₂,FeCl₃

Question 52

Para-chlorotoluene is the name of an organic compound. Which of the following statements concerning the structure of this compound is false?

A)The compound is an alkene.
B)The compound contains a ring of carbon atoms.
C)A chlorine atom and a methyl group are substituents present in this compound.
D)The substituents that are present have a 1,4 relationship.

Question 53

Which statement concerning the compound 1-ethylcyclohexene is false?

A)It contains a ring of six carbons.
B)It contains one C=C bond.
C)It contains a two carbon substituent on the parent carbon chain.
D)It is a saturated hydrocarbon.

Question 54

The double bonds in naturally occurring fatty acids are typically trans.

Question 55

All commercially available sunscreens contain a benzene ring in the structure of the active ingredient. Which of the following compounds might be effective as an active ingredient in a commercial sunscreen?

A)
B)
C)
D)
E)All would be effective.

Question 56

The compounds o-chlorophenol and m-chlorophenol are examples of ________.

A)molecules that are identical
B)molecules that are constitutional isomers
C)molecules that are stereoisomers
D)molecules that are isotopes

Question 57

What is the product of the reaction below?

A)
B)
C)
D)

Question 58

Hydrogenation is the addition of ________ to an alkene.

A)hydrogen (H)
B)hydrogen (H₂)
C)hydroxide (OH^-)
D)water (H₂O)

Question 59

When an alkene undergoes an addition reaction,new atoms replace the hydrogen atoms on the carbons that are part of the double bond.

Question 60

When 4,4-dimethyl-2-pentene adds H₂ in the presence of a metal catalyst,the product is 4,4-dimethylpentane.

Question 61

The common name for methylbenzene is aniline.

Question 62

Compounds containing two or more benzene rings that share carbon-carbon bonds are called polycyclic aromatic hydrocarbons (PAHs).

Question 63

A common functional group in many antioxidants is a carbonyl group on a benzene ring.

Question 64

Phenols are antioxidants.

Question 65

The IUPAC name of this compound is 5-butyl-5-methyl-3-heptyne.

Question 66

An organic compound is classified as aromatic if it is cyclic and has a fragrant odor.

Question 67

The reaction below illustrates the polymerization of polypropylene.

Question 68

The reaction below illustrates the polymerization of tetrafluoroethylene.

Question 69

When an oil is partially hydrogenated,all of the double bonds react with H₂,giving a product that has a higher melting point.

Question 70

Saturated oils are more susceptible than unsaturated fats to oxidation,giving them a longer shelf life.

Question 71

Markovnikov's rule is used to predict the addition products of benzene.

Question 72

The IUPAC name of this compound is 3,4-dimethyl-2,4,6-octatriene.

Question 73

Saturated and unsaturated fatty acids have a similar 3-D shape.

Question 74

The nitration of benzene is illustrated in the reaction below.

Question 75

Aniline can be formed by the hydrogenation of nitrobenzene.

Question 76

Aromatic hydrocarbons and alkenes undergo the same kind of addition reactions.

Question 77

Partial hydrogenation of soybean oil has the effect of decreasing the number of carbon-carbon double bonds in the oil.

Question 78

Butter and lard are composed mostly of saturated fatty acids.

Question 79

When benzene undergoes a sulfonation reaction the product is the compound shown below.

Question 80

The IUPAC name of this compound is 3,3-dimethyl-1,4-pentadiene.