Deck 12: Unsaturated Hydrocarbons

Question 1

What is the IUPAC name for the compound shown below?

A)2-methyl-1,4-pentadiene
B)2-methyl-2,4-dipentene
C)4-methyl-1,3-pentadiene
D)4-methyl-2,4-pentadiene

Answer 1

4-methyl-1,3-pentadiene

Question 2

Which of the following is the monomer used to produce Teflon ® ?

A)
B)
C)
D)

Answer 2

Question 3

A portion of the structure of Acrilan ® is shown. What is the structure of the monomer?

A)
B)
C)
D)

Answer 3

Question 4

Which of the following compounds is trans -3-hexene?

A)
B)
C)
D)

Question 5

Select the major product that would result from the reaction below. CH₃ − CH=CH₂ + H₂O

A)CH₃CH(OH)CH₃
B)CH₃CH₂CH₂OH
C)CH₃CH₂CH₃
D)CH₃CH₂CH₂SO₄

Question 6

Which is the formula for an alkene?

A)CH₃CHCH₂
B)CH₃CH₂CH₂
C)CH₃CH₃CH₂
D)More than one response is correct.

Question 7

Which of the following represents an addition reaction?

A)HX + C₄H₈ → C₄H₉X
B)X₂ + C₃H₆ → C₃H₅X + HX
C)C₄H₈ → C₄H₆ + H₂
D)more than one response is correct

Question 8

What number would be used to indicate the double bond position in the IUPAC name for CH₃-CH₂-CH=CH-CH₃

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

Question 9

Which characteristic relates to alkenes but not the other hydrocarbon families?

A)saturation
B)halogen substitution
C)double bonds
D)triple bonds

Question 10

Which of the following is the correct IUPAC name for the following compound?

A)5-bromo-1,3-cyclohexadiene
B)6-bromo-1,3-cyclohexadiene
C)2-bromo-1,4-cyclohexadiene
D)3-bromo-1,5-cyclohexadiene

Question 11

Select the major product that would result from the reaction below. CH₃CH₂CH=CH₂ + HBr → __________

A)CH₃(CHBr)₂CH₃
B)CH₂CH₂CH₂CH₃
C)CH₃CHBrCH₂CH₃
D)CH₃CH₂CH₂CH₂Br

Question 12

Which of the following can exhibit geometric isomerism?

A)1-propene
B)1,2,2-tribromoethene
C)2,3-dimethyl-2-butene
D)1-bromo-1-propene

Question 13

What reagent or reagents is required for the conversion of cyclohexene to cyclohexane?

A)HCl
B)H₂O and H₂SO₄
C)H₂ and H₂SO₄
D)H₂ and Pt

Question 14

What is the addition polymer produced from the monomer shown below?

A)
B)
C)
D)

Question 15

Which of the following is the polymer produced from CH₃ − CH=CH − Cl?

A)
B)
C)
D)

Question 16

In the IUPAC name for the following compound, the -Br group is located at what position of the compound shown? CH₃CHBrCH=CH₂

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

Question 17

Which of the following compounds could exhibit geometric isomerism?

A)
B)
C)
D)

Question 18

Which of the compounds below could correctly be called a cis compound?

A)
B)
C)
D)None of these

Question 19

Name a difference between a saturated and an unsaturated hydrocarbon.

A)Saturated hydrocarbons are composed of only carbon and hydrogen, and unsaturated hydrocarbons include other atoms than just carbon and hydrogen.
B)Saturated hydrocarbons do not contain multiple bonds between carbons, but unsaturated hydrocarbons do contain multiple bonds.
C)Unsaturated hydrocarbons are flammable but saturated hydrocarbons are not.
D)Saturated hydrocarbons are essentially insoluble. Unsaturated hydrocarbons are soluble.

Question 20

What is the IUPAC name for the compound shown below?

A)3-ethyl-1-pentene
B)2-ethyl-2-pentene
C)3-ethyl-3-pentene
D)2-ethyl-1-pentene

Question 21

Which is a difference between butene and cyclobutene?

A)They are isomers.
B)Cyclobutene has 2 double bonds, butene does not.
C)The location of the double bond is terminal in cyclobutene, but between interior carbons in butene.
D)Cyclobutene is missing more hydrogens than is butene.

Question 22

Acetylene is commercially useful as a fuel for torches and as

A)a starting material for plastics.
B)an industrial solvent.
C)an ingredient in pesticides.
D)a component in paint formulations.

Question 23

Which of the following is a useful organic solvent?

A)aniline
B)toluene
C)naphthalene
D)phenacetin

Question 24

Identify the statement about lycopene that is true.

A)Lycopene is known as Vitamin C.
B)Lycopene gives watermelon their red color.
C)Raw tomatoes are a better source of lycopene than cooked tomatoes.
D)Lycopene should not be eaten with fatty foods.

Question 25

Which of the following compounds is not considered aromatic?

A)
B)
C)
D)

Question 26

Select the product of the following reaction.

A)
B)
C)
D)

Question 27

Which of the following is the correct name for the compound shown?

A)2-chlorophenol
B)2-chlorotoluene
C)2-chloroaniline
D)1-chloroaniline

Question 28

Which of the following is the correct IUPAC name for the compound CH₂ − C ≡ C − CH₂ − CH₂ − Br?

A)4-bromopentyne
B)1-bromo-2-pentyne
C)1-bromo-3-pentyne
D)5-bromo-2-pentyne

Question 29

Which of the following structures violates the octet rule?

A)
B)
C)
D)

Question 30

Which is a difference between butyne and cyclobutyne?

A)Cyclobutyne does not exist.
B)Butyne's multiple bond is interior, cyclobutyne is not between interior carbons.
C)Cyclobutyne burns much hotter than butyne because of the greater unsaturation.
D)None of these

Question 31

A major source of aromatic compounds is _____ .

A)coal tar
B)plants
C)animals
D)soils

Question 32

Naphthalene is used as _____ .

A)an explosive
B)moth repellent
C)a pain reliever
D)a solvent

Question 33

What is the correct name for ?

A)3-phenyl-1-propene
B)1-phenyl-1-propene
C)1-phenyl-2-propene
D)3-phenyl-2-propene

Question 34

The addition of two moles of hydrogen to an alkyne produces an _____ .

A)alkane
B)alkene
C)aromatic
D)alkyl halide

Question 35

Which is the formula for an alkyne?

A)CH₃CH₂CCH2
B)CH₃CH₂CH₂CH₃
C)CH₃CH₂CCH
D)CH₃CH₂CCH₂

Question 36

What is the characteristic of aromatic compounds that is responsible for them being named aromatic compounds?

A)The compounds have a pleasant smell.
B)These compounds contain a benzene ring or structural relative.
C)A requirement is to contain a hydrocarbon chain that is either saturated or unsaturated and at least 3 carbons long.
D)There is more than one correct response.

Question 37

The benzene ring as a branch is called a _____ group.

A)hexyl
B)benzyl
C)phenol
D)phenyl

Question 38

Which is a characteristic of alkenes and alkynes, but not a characteristic of alkanes?

A)Alkynes are not flammable, the others are flammable.
B)Alkenes all have a scent similar to the aromatic compounds, but the alkanes and alkenes have a scent that is extremely sharp.
C)Alkanes have only single bonds between carbons.
D)There is more than one correct response.

Question 39

Another acceptable name for 1-ethyl-3-methylbenzene is _____ .

A)m -ethylmethyltoluene
B)o -ethylmethyltoluene
C)p -ethylmethyltoluene
D)m -ethyltoluene

Question 40

Which is a difference between butane and butene?

A)butane burns and butene does not
B)the presence of a double bond
C)they are isomers
D)the presence of a triple bond

Question 41

Name the following compound.

A)5-bromo-2-hexyne
B)bromo-4-hexyne
C)1-bromo-1-methyl-3-pentyne
D)none of these are correct

Question 42

How many pi bonds are in the following two molecules, respectively from left to right?

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

Question 43

Indicate the hybridization on each of the carbon atoms designated by a number in the following molecule.

A)1 - sp ,  2 - sp ²
B)1 - sp³ ,  2 - sp ²
C)1 - sp² ,  2 - sp ³
D)1 - sp³ ,  2 - sp

Question 44

Indicate the geometry around each of the carbon atoms in the following molecule.

A)1 - triangular, 2- tetrahedral, 3 - linear
B)1 - linear, 2- tetrahedral, 3 - triangular
C)1 - tetrahedral, 2- tetrahedral, 3 - linear
D)1 - triangular, 2- linear, 3 - tetrahedral

Question 45

What type of hybridization is associated with the carbons in ethene?

A)sp
B)sp ²
C)sp ³
D)sp ⁴

Question 46

Name the following aromatic compound.

A)1,5-diethylbenzene
B)p -diethylbenzene
C)o -diethylbenzene
D)1,3-diethylbenzene

Question 47

According to Markovnikov's rule, when 3-methyl-1-butene undergoes and addition reaction with HCl, the chlorine will end up on which main chain carbon?

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

Question 48

The ability to detect light is based, in part, to a change of one from of retinal to another.  Specifically, what is this change?

A)a cis to trans conversion
B)a trans to cis conversion
C)A hydrogenation reaction
D)A dehydrogenation reaction

Question 49

Which of the following compounds is not possible?

A)
B)
C)
D)

Question 50

Which of the following could exhibit cis\trans isomerism?

A)propene
B)1,2-dichloropropene
C)1-butene
D)2-butene

Question 51

Which of the following is a reasonable representation of an sp² hybridized orbital?

A)
B)
C)
D)

Question 52

What type of hybridization is associated with alkyne bonding?

A)sp
B)sp²
C)sp³
D)sp⁴

Question 53

Poly (vinyl chloride), PVC, is used for water pipes and synthetic leather. What is the monomer of the PVC polymer shown below?

A)
B)
C)
D)

Question 54

Starting with cyclopentene, indicate which of the following reactants would produce the product listed.

A)
B)
C)
D)

Question 55

Which of the following will not reduce your cancer risk?

A)not smoking
B)being active
C)maintaining proper weight
D)cooking meats at high temperatures

Question 56

What would the reaction of hydrogen fluoride with ethene be an example of?

A)hydration
B)halogenation
C)hydrohalogenation
D)fluorination

Question 57

The following compound is a(n)____.

A)vitamin
B)industrial solvent
C)amino acid
D)monomer for polystyrene

Question 58

Lycopene has been shown to prevent certain types of cancer.  Which of the following is not a good source of lycopene?

A)tomatoes
B)pink grapefruit
C)guava
D)green beans

Question 59

Color is a property associated with which type of hydrocarbon?

A)alkanes
B)alkenes
C)alkynes
D)cycloalkanes

Question 60

Which of the following accurately depicts o -iodotoluene?

A)
B)
C)
D)

Question 61

Benzene is an alkene with more than one multiple bond.

Question 62

The reaction of bromine with an alkene can be detected by which of the following?

A)formation of hydrogen gas
B)loss of bromine solution color
C)precipitate formation
D)color change from red to green

Question 63

An alkene with one multiple bond can be converted to an alkane by hydration.

Question 64

The general formula for an alkene is C_nH_2n.

Question 65

The general formula for an alkyne is C_nH_2n.

Question 66

The addition of bromine to an alkene results in an alkane because one bond of the multiple bond is broken.

Question 67

Two moles of hydrogen gas would be required to convert one mole of 2-butyne into butane.

Question 68

CH₃CH₂CH₂CH₂ is the formula for a saturated hydrocarbon.

Question 69

2-butyne can exist as cis - and trans - isomers.

Question 70

Alkenes must have at least two carbon atoms.

Question 71

Alkenes can only have one double bond.

Question 72

Polymers are compounds that are composed of repeating units chemically bound to each other.

Question 73

The physical properties of alkynes are very different from those of alkenes.

Question 74

A characteristic of alkynes is a region of strong polarity caused by the multiple bond.

Question 75

Phenyl is the name given to the ion produced when benzene loses one hydrogen, making it a substituent.

Question 76

One of the halogenation reactions occurs when a halogen, a member of group VIIA, reacts with alkene.

Question 77

Markovnikov's rule indicates that in the addition of H-X to an alkene, the hydrogen becomes attached to the carbon atom that is already bonded to more hydrogens.

Question 78

The same substances which add to double bonds can add to triple bonds.

Question 79

Which of the following can be used to represent a phenyl branch when drawing an organic structure?

A)
B)
C)
D)More than one answer is correct.

Question 80

Cyclic compounds do not undergo halogenation reactions.