Deck 22: Organic Chemistry and Biochemistry

Question 1

Which compound below is named nonane ?

A) CH₄
B) CH₃CH₂CH₃
C) CH₃(CH₂)₃CH₃
D) CH₃(CH₂)₅CH₃
E) CH₃(CH₂)₇CH₃

Answer 1

CH₃(CH₂)₇CH₃

Question 2

Which molecule listed below (none are cyclic) is a saturated hydrocarbon?

A) C₂H₄
B) C₃H₆
C) C₄H₈
D) C₅H₈
E) none of these

Answer 2

none of these

Question 3

The molecular formula for hexane is:

A) C₆H₆
B) C₆H₈
C) C₆H₁₂
D) C₆H₁₄
E) none of these

Answer 3

C₆H₁₄

Question 4

What is the correct IUPAC name for the following branching alkane ?

A) 2-Ethyl-3-methylpentane
B) 2-sec-butylbutane
C) 3,4-Dimethylhexane
D) 4-Ethyl-3-methylpentane
E) 2,3-Diethylbutane

Question 5

What attribute of carbon is false ?

A) It can form extended chains or rings with itself.
B) It can be involved in a single, double or triple bond.
C) It can bond up to five other atoms.
D) As a central atom, its electron pair geometry can be tetrahedral, trigonal planar or linear.
E) Carbon forms compounds in which its X - C - X bond angles are either 109.5 ° , 120 ° or 180 ° .

Question 6

The name of the compound pictured is:

A) 1-methylpentane
B) 2-methylpentane
C) 4-methylpentane
D) 2-hexane
E) none of these

Question 7

What is the correct systematic IUPAC name for the following branching alkane ?

A) 2-Ethyl-2,5-Dimethyloctane
B) 3,3,6-Trimethylnonane
C) Dodecane
D) 2-Ethyl-2-methyl-5-propylhexane
E) 2-Propyl-5-ethyl-5-methylhexane

Question 8

What is the IUPAC name for the following alkane?

A) 2-Ethyl-3-Methyl-3-Propylbutane
B) 3-Ethyl-2-Methyl-2-Propylbutane
C) 2-Ethyl-3,3-Dimethylhexane
D) 2- sec -butyl-2-methylpentane
E) 3,4,4-Trimethylheptane

Question 9

What is the general formula for any continuous chain alkane?

A) C_nH_2n+2
B) C_nH_2n
C) C_nH_{2n - 2}
D) C_nH_n
E) C_nH_n+2

Question 10

What is the IUPAC name for the following organic compound?

A) 2,4,5-Trimethylheptane
B) 3,4,6-Trimethylheptane
C) Decane
D) 2-Ethyl-3,5-dimethylhexane
E) 5-Ethyl-2,4-dimethylhexane

Question 11

What is the correct IUPAC name for the following compound?

A) 3-methyl-4-propylhexane
B) 3-propyl-4-methylhexane
C) 3-methyl-4-ethylheptane
D) 4-ethyl-3-methylheptane
E) 2-Ethyl-3-propylpentane

Question 12

Consider the following molecules. Which of these molecules are considered saturated ?

A)
B) CH₃CH₃
C) CH₃CH=CH₂
D)
E) All of these are saturated

Question 13

What can be stated about the name, 1,2,2-Trimethylpentane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

A) 1,2,2-Trimethylpentane is a valid name for a compound.
B) This name is wrong because the longest chain is three carbon atoms and it should be named 2-Ethyl-2-Propylpropane.
C) This name is wrong because the longest chain is four carbons and it should be named 2-Methyl-2-propylbutane.
D) This name is wrong because the longest chain is five carbon atoms and it should be named 2-Ethyl-2-methylpentane
E) This name is wrong because the longest chain is six carbon atoms in length and it should be named 3,3-Dimethylhexane.

Question 14

Which line-angle drawing below is named Heptane ?

A)
B)
C)
D)
E)

Question 15

What is the IUPAC name for the straight chain alkane with a formula of CH₃CH₂CH₂CH₂CH₃?

A) methane
B) propane
C) pentane
D) heptane
E) nonane

Question 16

What can be stated about the name of 3-Methyl-4-Ethylhexane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

A) This name is a valid name for a compound.
B) This name is incorrect because it provides the wrong numbering scheme. The compound should be named 3-Ethyl-4-Methylhexane.
C) This name is incorrect because the longest chain is five carbon atoms long and there is only one substituent. The name of the compound should be 3-sec-butylpentane.
D) This name is incorrect because the longest chain is five carbon atoms and there are two substituent groups. The name of the compound should be 2,3-Diethylpentane.
E) This name is incorrect. There are nine carbon atoms and therefore the compound should be named nonane.

Question 17

Which of the following compounds is considered unsaturated ?
I. CH ₃ CH₂ CH ₂ CH ₃
II. CH₂ =CHCH₃
III.

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 18

Which organic compound listed below is octane ?

A) CH₃(CH₂)₄CH₃
B) CH₃CH(CH₃)CH₂CH₃
C) CH₃(CH₂)₆CH₃
D) (CH₃)₃CCH₂C(CH₃)₃
E) CH₃(CH₂)₈CH₃

Question 19

Which of the following line angle drawings is pentane ?

A)
B)
C)
D)
E)

Question 20

What is the IUPAC name for the following organic compound?

A) 1-methyl-1-propylpentane
B) 2-methyl-3-methylheptane
C) 2,3-dimethylheptane
D) 5,6-dimethylheptane
E) 2-butyl-3-methylbutane

Question 21

Compare compounds I-III with compound A. Which compound(s) listed below is(are) the same compound as compound A?
(Hint:
Try to name each.)
A
I.
II.
III.

A) Compound I only
B) Compound II only
C) Compound III only
D) Compounds I and II
E) All of these

Question 22

Exhibit 22-1 Consider Compound A and Compounds I-III to answer the following question(s).
A
I.
II.
III.
Refer to Exhibit 22-1. Which of the three compounds I-III is the same compound as compound A?

A) Compound I
B) Compound II
C) Compound III
D) Compounds I and II
E) All of these are the same compound as compound A

Question 23

How are the three alkanes shown below with a formula of C₆ H 14 related?
(Hint:
Give them a name.)
I.
II.
III.

A) Structures I and II are different conformations of the same compound and structure III is a structural isomer of I and II.
B) Structures I and III are different conformations of the same compound and structure II is a structural isomer of I and III.
C) Structures II and III are different conformations of the same compound and structure I is a structural isomer of II and III.
D) All three structures are different conformations of the same compound.
E) All three structures are three unique structural isomers with the formula C₆H₁₄.

Question 24

Exhibit 22-1 Consider Compound A and Compounds I-III to answer the following question(s).
A
I.
II.
III.
Refer to Exhibit 22-1. Which of the three compounds I-III are structural isomers of compound A?

A) Compound I
B) Compound II
C) Compound III
D) Compounds I and II
E) Compounds II and III

Question 25

Exhibit 22-1 Consider Compound A and Compounds I-III to answer the following question(s).
A
I.
II.
III.
Refer to Exhibit 22-1. What is the systematic IUPAC name for compound A?

A) Octane
B) 2-Methyl-3-isopropylbutane
C) 2,3,4-Trimethylpentane
D) Propylpentane
E) 2-Ethyl-2,3-dimethylbutane

Question 26

What common alkyl group is shown below?
(The squiggly line represents a long straight chain.)

A) isopropyl
B) n-butyl
C) isobutyl
D) sec -butyl
E) tert -butyl

Question 27

Which cyclic compound listed below is Cycloheptane ?

A)
B)
C)
D)
E)

Question 28

Compare compounds I-III with compound A. Which compound(s) is(are) the same as compound A?
(Hint:
Try to name each.)
I.
II.
III.

A) I only
B) II only
C) III only
D) I and II
E) None are the same as compound A

Question 29

Compare compounds I-III with compound A. Which of the three compounds listed below is(are) the same compound as compound A?
(Hint:
Try to give them each a name.)
I.
II.
III.

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 30

Compare compounds I-III with compound A. Which compound(s) listed below is(are) the same compound as compound A?
(Hint:
Try to name each.)
I.
II.
III.

A) I only
B) II only
C) III only
D) I and II
E) All of these

Question 31

What is the correct IUPAC name for the following cyclic alkane?

A) Cycloctane
B) Propylcyclopentane
C) 1-Ethyl-3-Methylcyclopentane
D) 1-Methyl-3-Ethylcyclopentane
E) Meta-Ethylmethylcyclopentane

Question 32

What common branching alkyl group is shown below?
(The horizontal squiggly line represents a long continuous straight chain.)

A) isopropyl
B) n-butyl
C) isobutyl
D) sec -butyl
E) tert -butyl

Question 33

Compare compounds I-III with compound A. Which of the three compounds listed below is(are) the same compound as compound A?
(Hint:
Try to give them each a name.)
I.
II.
III.

A) I only
B) II only
C) III only
D) I and II
E) All of these

Question 34

What is the name of the following branching alkyl group?
(The squiggly line represents a long straight chain.)

A) isopropyl
B) n-butyl
C) isobutyl
D) sec -butyl
E) tert -butyl

Question 35

What is the IUPAC name for the compound with the following line-angle drawing?

A) Methylcyclopentane
B) 1,2-dimethylcyclopentane
C) 1,2-dimethylpentane
D) 1,2-dimethylcyclohexane
E) 3,4-dimethylcyclohexane

Question 36

How are the following two compounds related?

A) They are the same compound.
B) They are structural isomers.
C) They are cis - trans isomers.
D) They are completely different compounds.
E) They are chiral isomers.

Question 37

What can be stated about the name, 4-Methylpentane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

A) 4-Methylpentane is a valid name for a compound.
B) This name is wrong because the longest chain is six carbon atoms in length. It should be named Hexane.
C) This name is wrong because it does not provide the lowest number for the substituent "Methyl" group. It should be named 2-Methylpentane.
D) This name is wrong because the substituent group is "isopropyl" and the compound name should be 1-Isopropylpropane.
E) This name is wrong because it doesn't take into account that there are two methyl substituents at the branch point and the compound should be named 1,1-Dimethylbutane.

Question 38

Compare compounds I-III with compound A. Which of the three compounds listed below is(are) the same compound as compound A?
(Hint:
Try to give them each a name.) A
I.
II.
III.

A) I only
B) II only
C) III only
D) I and II
E) I and III

Question 39

What can be stated about the name of 1,1,1-Trimethylhexane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

A) This name is a valid name for a compound.
B) This name is incorrect because it provides the wrong numbering scheme. The compound should be named 1,2,2-Trimethylhexane.
C) This name is incorrect because the longest chain is seven carbon atoms long and there are two substituent groups. The name of the compound should be 2,2-Dimethylheptane.
D) This name is incorrect because the longest chain is eight carbon atoms and there is one substituent groups. The name of the compound should be 2-Methyloctane.
E) This name is incorrect. There are nine carbon atoms and therefore the compound should be named Nonane.

Question 40

Name the compound:

A) 1,3-dibromohexane
B) 2,4-dibromohexane
C) 3,5-dibromohexane
D) dibromohexane
E) none of these

Question 41

What is the correct IUPAC name for the following cyclic alkane?

A) Cyclononane
B) 1-Ethyl-3,4-dimethylcyclopentane
C) 4-Ethyl-1,2-dimethylcyclopentane
D) 1,2-Dimethyl-4-ethylcyclohexane
E) 3-Ethyl-1,5-dimethylcyclopentane

Question 42

How are the following two compounds related?

A) They are the same compound.
B) They are structural isomers.
C) They are cis - trans isomers.
D) They are completely different compounds.
E) They are chiral isomers.

Question 43

What product(s) is(are) formed when methane, CH₄, is treated with chlorine and the mixture is exposed to light?
CH₄ + Cl₂→??

A) CH₃Cl
B) CH₂Cl₂
C) CHCl₃
D) CCl₄
E) all of these

Question 44

What is the correct IUPAC name for the following alkene?

A) Ethylpropylethene
B) 2-Propyl-1-butene
C) 2-Ethyl-1-pentene
D) 3-Methylhexene
E) Heptene

Question 45

What is the correct IUPAC name for the following alkene?

A) 4-methyl-4-heptene
B) 4-octene
C) 4-propyl-4-pentene
D) 2-propyl-1-pentene
E) 1,1-dipropylethene

Question 46

What is the correct IUPAC name for the following alkene?

A) 4,5-Dimethyl-4-octene
B) 2-Butyl-3-Methyl-1-pentene
C) 3-Methyl-2-propyl-1-hexene
D) 2,3-Dipropyl-1-Butene
E) 3,4-Dipropyl-1-Butene

Question 47

What is(are) the major product(s) of the following combustion reaction ?

A)
B)
C)
D)
E) CO₂ and H₂O

Question 48

What is the systematic IUPAC name for the following cycloalkane?

A) Cyclodecane
B) 1-Ethyl-2,4-Dimethylcyclohexane
C) 4-Ethyl-1,3-Dimethylcyclohexane
D) 2,4-Diethyl-1-propylcyclohexane
E) 1,3-Diethyl-4-propylcyclohexane

Question 49

What are the products of the complete combustion of ethane?
CH₃CH₃ + O₂→?

A) CO₂ + H₂O
B) CH₃CO₂H + H₂
C) C + H₂O + O₂
D) CO₂ + H₂
E) CH₃CH₂OH

Question 50

How are the following two compounds related?

A) They are completely different compounds with different formulas.
B) They are structural isomers.
C) They are stereoisomers.
D) They are cis / trans isomers.
E) They are chiral isomers.

Question 51

What is the correct structure for the compound, 1,2-Diethylcyclohexane?

A)
B)
C)
D)
E)

Question 52

What is the correct IUPAC name for the following alkene?

A) 2-ethyl-3-methyl-2-hexene
B) 2-ethyl-3-methyl-1-pentene
C) 4-ethyl-3-methyl-4-pentene
D) 3-methyl-4-ethyl-4-pentene
E) Octene

Question 53

Which molecule from the list below is an alkene ?

A)
B)
C)
D)
E)

Question 54

What is the correct IUPAC name for the following alkene?

A) 3-Decene
B) 2-Ethyl-3-Propyl-1-Pentene
C) 4-Ethyl-3-Propyl-4-Pentene
D) 3-Ethyl-3-Heptene
E) 2,3-Diethyl-1-Hexene

Question 55

What is the correct IUPAC name for the following cycloalkane?

A) 1-Ethyl-3,3,4-trimethylcyclopentane
B) 1-Ethyl-3,4,4-trimethylcyclopentane
C) 1-Ethyl-3-isopropyl-4-methylcyclopentane
D) 4-Ethyl-1,1,2-trimethylcyclopentane
E) 4-Ethyl-1,2,2-trimethylcyclopentane

Question 56

The molecular formula for butene is:

A) C₄H₄
B) C₄H₆
C) C₄H₈
D) C₄H₁₀
E) none of these

Question 57

How are the following two compounds related?

A) Completely different compounds
B) Identical compounds
C) Structural isomers
D) Cis - Trans isomers
E) Chiral isomers

Question 58

Which of the following hydrocarbons burns in the presence of excess oxygen to produce carbon dioxide, CO₂, and water, H₂O?

A) Methane
B) Ethene
C) Ethyne
D) Benzene
E) All of these

Question 59

How are the following two compounds related?

A) Completely different compounds
B) Structural isomers
C) Cis - Trans isomers
D) Same compound
E) Chiral isomers

Question 60

What is the IUPAC name and configuration for the following alkene?

A) cis -Decene
B) cis -4-Ethyl-5-Methyl-4-heptene
C) trans -4-Ethyl-5-Methyl-4-heptene
D) cis -4-Ethyl-3-Methyl-3-heptene
E) trans -4-Ethyl-3-Methyl-3-heptene

Question 61

Starting from five carbons in a row as shown below in the skeletal structure, how many different alkenes (structural isomers) with a formula of C 5 H 10 are possible?

A) zero
B) one
C) two
D) three
E) four

Question 62

Which alkene listed below is a trans stereoisomer?

A)
B)
C)
D)
E)

Question 63

Which of the following alkenes can have cis and trans isomers?
I. 1-propene
II. 2-butene
III. 3-hexene

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 64

What is the correct IUPAC name for the following alkene?

A) cis -3-propyl-3-hexene
B) trans -3-propyl-3-hexene
C) cis -4-Ethyl-4-heptene
D) cis -4-Ethyl-3-heptene
E) trans -4-Ethyl-3-heptene

Question 65

For which of the following can exhibit cis-trans isomerism possible?
I. 1,4-dichlorobenzene
II. 2,4-dichloro-2-butene
III. 1,1-dichloro-1-butene

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 66

From the list below, which compound is cis -2-hexene?

A)
B)
C)
D)
E)

Question 67

Which alkene listed below can have both cis and trans isomers?
I. 1-pentene
II. 2-pentene
III. 2-methyl-2-pentene

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 68

Which of the following alkenes can exhibit cis / trans isomerism?
I. 4-methyl-2-pentene
II. 3-methyl-2-pentene
III. 2-methyl-2-pentene

A) I only
B) I and II
C) I and III
D) II and III
E) All of these

Question 69

Which of the following alkenes can exhibit cis / trans isomerism?
I. 2-methyl-2-butene
II. 2-butene
III. 1-butene

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 70

Which of the following molecules is Cis -3-hexene?

A)
B)
C)
D)
E)

Question 71

Which of the following is Trans -3-Methyl-2-pentene?

A)
B)
C)
D)
E)

Question 72

What is the correct IUPAC name for the following cycloalkene?

A) 1-Ethyl-2-methylcyclopentene
B) 2-Ethyl-1-methylcyclopentene
C) 2-Methyl-3-Ethylcyclopentene
D) 1-Ethyl-2-methylcyclooctene
E) 5-Ethyl-1-methylcyclopentene

Question 73

Which of the following alkenes can have cis and trans isomers?
I. 2-methyl-2-hexene
II. 3-methyl-2-hexene
III. 2-methyl-3-hexene

A) I only
B) II only
C) III only
D) I and II
E) II and III

Question 74

What is the IUPAC name for the following compound?

A) 2,2-dimethylpropyne
B) 3,3-dimethyl-1-butyne
C) 2,2-dimethyl-3-butyne
D) Hexyne
E) Tertbutylethyne

Question 75

Which of the following bonds allow(s) for free rotation?
I. A carbon-carbon single bond in an alkane
II. A carbon-carbon double bond in an alkene
III. A carbon-carbon single bond in a cyclic alkane

A) I only
B) II only
C) III only
D) I and II
E) I and III

Question 76

Which compound listed below has a cis and trans isomer?
I. CH₂=CCl₂
II. CH₃CCl=CCl₂
III. CH₃CCl=C(CH₃)Cl

A) I and II, but not III
B) I and III, but not II
C) II and III, but not I
D) all three have cis and trans isomers
E) only III

Question 77

Which of the following is cis -4-Ethyl-3-heptene?

A)
B)
C)
D)
E)

Question 78

What is the correct IUPAC name for the following cyclic alkene?

A) 1,2,2-Trimethylcyclohexene
B) 2-Methyl-1-propylcyclopentene
C) 1-Methyl-2-propylcyclohexene
D) 1-Isopropyl-2-methylcyclopentene
E) 6-Isopropyl-1-methylcyclohexene

Question 79

Which of the following molecules is Trans -3-hexene?

A)
B)
C)
D)
E)

Question 80

Which of the following molecules is considered a cis alkene isomer?

A)
B)
C)
D)
E)