Deck 9: Hydrocarbons: an Introduction to Organic Molecules

Question 1

The following compound is classified as an alkane.

Answer 1

False

Question 2

One of the reasons that carbon forms such a large number of compounds is due its ability to form long chains and rings.

Answer 2

True

Question 3

Examine the structure shown below. The compound is a hydrocarbon and an aromatic compound

Answer 3

True

Question 4

The compound below is unlikely to exist.

Question 5

The following compound contains four tetrahedrally arranged atoms.

Question 6

The line structure for is shown below.

Question 7

The structure for 2,2,3,3-tetramethylbutane is:

Question 8

How many hydrogen atoms would be needed to complete the following structure?

A) 6
B) 7
C) 9
D) 10

Question 9

The following structure illustrates a trans isomer.

Question 10

The two compounds shown below have the same molecular formula. CH₃-CH₂-O-CH₂-CH₂-CH₃ CH₃-CH₂-CH₂-CH₂-CH₂-OH

Question 11

The following two substances would have the same physical properties.

Question 12

The following represents trans-2,3-dimethyl-2-pentene.

Question 13

In propyne, the arrangement of bonds around all of the carbon atoms is shown below.

Question 14

The following compound would be correctly classified as an alkyne.

Question 15

The compound shown below is an isomer of 2,2-dimethylbutane.

Question 16

The two compounds shown below would be expected to exhibit similiar properties. CH₃-CH₂-O-CH₂-CH₂-CH₃ CH₃-CH₂-CH₂-CH₂-CH₂-OH

Question 17

Carbon atoms involved in double bonds exhibit a trigonal planar arrangement.

Question 18

The following molecule contains two functional groups, a haloalkane group and an alkyne. CH₃-CHBr-CH=CH₂

Question 19

In the compound shown below, which atoms, if any, do not form the correct number of covalent bonds?

A) H
B) O
C) C
D) H and C
E) C and O
F) H, C and O

Question 20

The correct IUPAC name of the following compound is methylcyclohexane.

Question 21

The IUPAC name of the following contains an ethyl group located at position

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

Question 22

Consider the structure of the compound shown below. This compound is correctly characterized as:

A) branched alkane
B) saturated
C) aromatic
D) all of the above

Question 23

What is the IUPAC name for compound represented below?

A) isopropylbenzene
B) propylcyclohexane
C) propylbenzene
D) propylcyclohexene

Question 24

Which of the following is a correct structure for methylcyclopentane?

A)
B)
C)
D) All are correct representations.

Question 25

Which of the following is(are) constitutional isomer(s) of hexane?

A)
B)
C)
D) both a and b

Question 26

Of the compounds listed here, which one is not a constitutional isomer of the other three?

A) 2,3-dimethylpentane
B) 3-methylhexane
C) 3-ethylpentane
D) 2,2-dimethylbutane

Question 27

A student named a particular compound 2-ethyl-3-methyl-2-butene. Assuming that the student's choice actually corresponded to the correct distribution of the double bond and the substituents, what is the correct IUPAC name for this compound?

A) 2-ethyl-3-methyl-2-butene
B) 3,4-dimethyl-3-pentene
C) 2,3-dimethyl-2-pentene
D) 2,3-dimethyl-1-pentene

Question 28

Given the structure below, what is the IUPAC name for the compound?

A) 2,5-dimethyl-3-heptyne
B) 5-ethyl-2-methyl-3-hexyne
C) 3,7-dimethyl-4-heptyne
D) 1,1,5-trimethyl-2-hexyne

Question 29

Which of the following line structures is 4-isopropyloctane?

A)
B)
C)
D)

Question 30

Which of the following line structures represents butane?

A)
B)
C)
D)

Question 31

Consider the compounds given in the choices. Which would have the lowest melting point?

A)
B)
C)
D) All have about the same melting point.

Question 32

Give the IUPAC name for the following

A) 3,6-diethyl 3-methylnonane
B) 2,2,5,6-tetraethylhexane
C) 2,2,5-triethyloctane
D) none are correct

Question 33

Which of the following hydrocarbons is most likely to be a gas at room temperature?

A) butene
B) 1-hexene
C) 2-octene
D) 4-decene

Question 34

What is the IUPAC name for the following alkane?

A) 2-ethylpropane
B) methylbutane
C) pentane
D) 3,3-dimethylpropane

Question 35

Which of the following is could not be used to represent the same compound?

A)
B) CH₃-CH₂-CH₂-CH₂-CH₃
C) C₅H₁₂
D) All could represent the same compound.

Question 36

Which of the following would show the most similar chemical behavior to 1-butanol, which is shown below? CH₃CH₂CH₂CH₂-OH

A)
B)
C)
D)

Question 37

The following compound would be classified as an:

A) alkane
B) alkene
C) alkyne
D) aromatic

Question 38

Which of the following have cis and trans isomeric forms?

A) heptane
B) 2-heptyne
C) 1-heptene
D) 2-heptene
E) Both c and d have cis and trans isomeric forms.
F) All have cis and trans isomeric forms.

Question 39

What is line bond formula for the following full structural formula?

A)
B)
C)
D)

Question 40

Which of the following is a correct IUPAC name?

A) 1-methylhexane
B) 2-ethylhexane
C) 3-propylhexane
D) None, they are all incorrect.

Question 41

Which of the following is probably soluble in water?

A) ethylbenzene
B) xylene
C) 2,2-dimethylbenzene
D) All are insoluble in water.

Question 42

Consider the formula given below. C₄H₈ This following represents the molecular formula of an

A) alkyne
B) alkene
C) alkane
D) none of these

Question 43

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure ______________________is most likely to be least reactive.

Question 44

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure C is classified as a(n) _________________________.

Question 45

Consider the following structures. Fill in the blanks with the appropriate letters (A, B, C, or D).
Structure ______________________ is a stereoisomer of cis-2-hexene.

Question 46

Consider the following structure. What is the relationship to the name given below? 2,3-dimethylhexane

A) constitutional isomers
B) cis-trans isomers
C) same compound
D) cycloalkane
E) diffferent compound

Question 47

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure D is classified as a(n) _________________________.

Question 48

Consider the following molecule of the birth control drug known as RU 486. Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the oval is a(n)_________________________.

Question 49

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure B is classified as a(n) _________________________.

Question 50

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure A is classified as a(n) _________________________.

Question 51

Consider the following molecule of the birth control drug known as RU 486. Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the square is a(n)_________________________.

Question 52

Consider the following structure. What is the relationship to the structure given below? CH₃-CH₂-CH₂-CH=CH-CH₂-CH₂-CH₃

A) constitutional isomers.
B) cis-trans isomers.
C) same compound.
D) cycloalkane.
E) different compound.

Question 53

What is the name of a branch on the principal carbon chain that contains three carbon atoms?

A) pentyl
B) propyl
C) ethyl
D) methyl

Question 54

Consider the following structures. Fill in the blanks with the appropriate letters (A, B, C, or D).
Structure A is a constitutional isomer of Structure _____________________.

Question 55

What must be the name for the missing hydrocarbon in the following combustion reaction? _______ + 3 O₂ → 2 CO₂ + 2 H₂O

A) ethane
B) ethene
C) ethyne
D) More than one hydrocarbon is possible.

Question 56

Consider the following molecule of the birth control drug known as RU 486. Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the triangle is a(n)_____________________.

Question 57

Consider the following molecule of the birth control drug known as RU 486. Fill in the blanks with the appropriate term from the list below.
alkane
cycloalkane
alkene
cycloalkene
alkyne
aromatic
haloalkane
The functional group enclosed in the circle is a(n)_____________________.

Question 58

Which of the following is the appropriate ending for the name of an alkane?

A) ane
B) ene
C) benzene
D) yne

Question 59

Consider the following structure. This substance would be classified as a(n)

A) alkane.
B) alkene.
C) alkyne.
D) aromatic hydrocarbon.
E) cycloalkane.

Question 60

Consider the following structures. Fill in the blanks with the appropriate letters (A, B, C, or D).
Structure C is identical to Structure _____________________.

Question 61

Using molecular formula, write the balance equation for the complete combustion of benzene.

Question 62

Examine the following structure. Complete the following statements about this structure.
If all three numbered hydrogen atoms were replaced by a methyl group, the IUPAC name of the new compound would be ____________.

Question 63

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure ______________________ would have chemical and physical properties closest to that of 2-hexene.

Question 64

Draw the condensed structural formula of 3-ethyl-3-methylhexane.

Question 65

Examine the following structure. Complete the following statements about this structure.
The IUPAC name for this substance is____________.

Question 66

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
Structure ____________________ will have the lowest melting point.

Question 67

What is the condensed structural formula for the following substance?

Question 68

Examine the following structure. Complete the following statements about this structure.
If the hydrogen atom numbered "1" replaced by a methyl group, the IUPAC name of the new compound would be ____________.

Question 69

What is the name of the following compound?

Question 70

Examine the following structure. Complete the following statements about this structure.
If the hydrogen atom numbered "2" replaced by a methyl group, the IUPAC name of the new compound would be ____________.

Question 71

Examine the following structures. Fill in the blanks with the appropriate letter (A, B, C, ....).
The balanced equation for the combustion of structure _______________________ would required the largest coefficient for O₂.

Question 72

What is the molecular formula for the following substance?

Question 73

Examine the following structure. Complete the following statements about this structure.
The arrangement of atoms about each of the carbon atoms is a ____________.

Question 74

During the complete combustion of benzene, if 9.55 g of benzene were consumed what mass of oxygen in grams would be needed?