Question 1

Which of the following alcohols has the lowest boiling point?

Accepted Answer

A)  1-pentanol 
B)  1-octanol 
C)  1-hexanol 
D)  1-heptanol 
A)  1-pentanol 
B)  1-octanol 
C)  1-hexanol 
D)  1-heptanol A

Question 2

What is the name of the −OCH3 group?

Accepted Answer

A)  methyloxy 
B)  methoxy 
C)  oxymethyl 
D)  oxymeth 
A)  methyloxy 
B)  methoxy 
C)  oxymethyl 
D)  oxymeth B

Question 3

What is the IUPAC name of the following compound?

Accepted Answer

A)  methyl propyl methanol 
B)  2-pentanol 
C)  1-methyl-1-butanol 
D)  4-pentanol 
A)  methyl propyl methanol 
B)  2-pentanol 
C)  1-methyl-1-butanol 
D)  4-pentanol B

Question 4

What is the IUPAC name for the following compound?

Accepted Answer

A)  cyclohexyl ethyl ether 
B)  ethyl cyclohexyl ether 
C)  ethoxycyclohexane 
D)  cyclohexoxyethane 
A)  cyclohexyl ethyl ether 
B)  ethyl cyclohexyl ether 
C)  ethoxycyclohexane 
D)  cyclohexoxyethane

Question 5

How many moles of oxygen are consumed during the complete combustion of one mole of methanol?

Accepted Answer

A)  1 
B)  1.5 
C)  2 
D)  2.5 
A)  1 
B)  1.5 
C)  2 
D)  2.5

Question 6

Two commonly used inhalation anesthetics are Ethrane and Forane. They are two of many isomeric ethers which have the molecular formula C3H2ClF5O. In how many of these isomeric ethers are three F atoms bonded to a single carbon atom?

Accepted Answer

A)  6 
B)  8 
C)  10 
D)  12 
A)  6 
B)  8 
C)  10 
D)  12

Question 7

Which of the following is true about the polarities of the C−O and O−H bonds?

Accepted Answer

A)  Neither the C−O nor the O−H bond is polar. 
B)  The C−O and O−H bonds are equally polar. 
C)  Both bonds are polar, but the C−O bond is less polar than the O−H bond. 
D)  Both bonds are polar, but the O−H bond is less polar than the C−O bond. 
A)  Neither the C−O nor the O−H bond is polar. 
B)  The C−O and O−H bonds are equally polar. 
C)  Both bonds are polar, but the C−O bond is less polar than the O−H bond. 
D)  Both bonds are polar, but the O−H bond is less polar than the C−O bond.

Question 8

Which of the following elements is present in thiols but not in alcohols?

Accepted Answer

A)  C 
B)  O 
C)  P 
D)  S 
A)  C 
B)  O 
C)  P 
D)  S

Question 9

Which of the following is the IUPAC name of sec-butyl alcohol?

Accepted Answer

A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol 
A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol

Question 10

Which of the following is the IUPAC name of butyl alcohol?

Accepted Answer

A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol 
A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol

Question 11

What is the maximum number of hydrogen bonds which can be formed by a single molecule of an alcohol which contains only one hydroxyl group?

Accepted Answer

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

Question 12

When a primary alcohol is oxidized to a carboxylic acid, an intermediate product is an aldehyde. Which physical property of the aldehyde can be exploited if it is desired to obtain the aldehyde as the reaction product?

Accepted Answer

A)  boiling point 
B)  molecular weight 
C)  solubility 
D)  any of these 
A)  boiling point 
B)  molecular weight 
C)  solubility 
D)  any of these

Question 13

Which of the following is the IUPAC name of isobutyl alcohol?

Accepted Answer

A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol 
A)  1-butanol 
B)  2-butanol 
C)  2-methyl-1-propanol 
D)  2-methyl-2-propanol

Question 14

Which of the following statements about London dispersion forces is/are true?

Accepted Answer

A)  London dispersion forces are stronger between molecules of 1-butanol than between molecules of 2-methyl-2-propanol. 
B)  London dispersion forces are weaker than hydrogen bonding interactions. 
C)  both a and b 
D)  neither a nor b 
A)  London dispersion forces are stronger between molecules of 1-butanol than between molecules of 2-methyl-2-propanol. 
B)  London dispersion forces are weaker than hydrogen bonding interactions. 
C)  both a and b 
D)  neither a nor b

Question 15

Of 1-pentanol, 2-pentanol and 3-pentanol, which compound(s) can yield only a single alkene product when dehydrated?

Accepted Answer

A)  only 1-pentanol 
B)  both 1-pentanol and 2-pentanol 
C)  both 1-pentanol and 3-pentanol 
D)  all of them 
A)  only 1-pentanol 
B)  both 1-pentanol and 2-pentanol 
C)  both 1-pentanol and 3-pentanol 
D)  all of them

Question 16

Which of the following statements concerning the boiling points of isomeric alcohols is true?

Accepted Answer

A)  Isomeric alcohols have the same boiling points. 
B)  The relative boiling points of isomeric alcohols are determined primarily by the different number of hydrogen bonds which they can form. 
C)  The relative boiling points of isomeric alcohols are determined primarily by the different shapes of the molecules. 
D)  The relative boiling points of isomeric alcohols are determined equally by both b and C ) 
A)  Isomeric alcohols have the same boiling points. 
B)  The relative boiling points of isomeric alcohols are determined primarily by the different number of hydrogen bonds which they can form. 
C)  The relative boiling points of isomeric alcohols are determined primarily by the different shapes of the molecules. 
D)  The relative boiling points of isomeric alcohols are determined equally by both b and C )

Question 17

Thiols are most closely related to which of the following classes of compounds?

Accepted Answer

A)  alcohols 
B)  aldehydes 
C)  carboxylic acids 
D)  ketones 
A)  alcohols 
B)  aldehydes 
C)  carboxylic acids 
D)  ketones

Question 18

Which of the following is true of the alcohol functional groups in 2,3-butanediol?

Accepted Answer

A)  One is secondary and one is tertiary. 
B)  Both are secondary. 
C)  Both are tertiary. 
D)  None of the above is true. 
A)  One is secondary and one is tertiary. 
B)  Both are secondary. 
C)  Both are tertiary. 
D)  None of the above is true.

Question 19

Which of the following explains why the boiling points of ethers are more similar to those of comparable alkanes than to those of comparable alcohols?

Accepted Answer

A)  Both ether molecules and alkane molecules are nonpolar. 
B)  Hydrogen bonding between ether molecules is weak. 
C)  Although ether molecules are polar they cannot form hydrogen bonds to other ether molecules. 
D)  None of the above is the correct explanation. 
A)  Both ether molecules and alkane molecules are nonpolar. 
B)  Hydrogen bonding between ether molecules is weak. 
C)  Although ether molecules are polar they cannot form hydrogen bonds to other ether molecules. 
D)  None of the above is the correct explanation.

Question 20

Which of the following would be the IUPAC name for the ether commonly called ethyl methyl ether?

Accepted Answer

A)  ethoxymethane 
B)  ethoxyethane 
C)  methoxymethane 
D)  methoxyethane 
A)  ethoxymethane 
B)  ethoxyethane 
C)  methoxymethane 
D)  methoxyethane

Exam 14: Alcohols, Ethers, and Thiols

Which of the following alcohols has the lowest boiling point?

What is the name of the −OCH3 group?

What is the IUPAC name of the following compound?

What is the IUPAC name for the following compound?

How many moles of oxygen are consumed during the complete combustion of one mole of methanol?

Two commonly used inhalation anesthetics are Ethrane and Forane. They are two of many isomeric ethers which have the molecular formula C3H2ClF5O. In how many of these isomeric ethers are three F atoms bonded to a single carbon atom?

Which of the following is true about the polarities of the C−O and O−H bonds?

Which of the following elements is present in thiols but not in alcohols?

Which of the following is the IUPAC name of sec-butyl alcohol?

Which of the following is the IUPAC name of butyl alcohol?

What is the maximum number of hydrogen bonds which can be formed by a single molecule of an alcohol which contains only one hydroxyl group?

When a primary alcohol is oxidized to a carboxylic acid, an intermediate product is an aldehyde. Which physical property of the aldehyde can be exploited if it is desired to obtain the aldehyde as the reaction product?

Which of the following is the IUPAC name of isobutyl alcohol?

Which of the following statements about London dispersion forces is/are true?

Of 1-pentanol, 2-pentanol and 3-pentanol, which compound(s) can yield only a single alkene product when dehydrated?

Which of the following statements concerning the boiling points of isomeric alcohols is true?

Thiols are most closely related to which of the following classes of compounds?

Which of the following is true of the alcohol functional groups in 2,3-butanediol?

Which of the following explains why the boiling points of ethers are more similar to those of comparable alkanes than to those of comparable alcohols?

Which of the following would be the IUPAC name for the ether commonly called ethyl methyl ether?

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What is the name of the −OCH₃ group?

Two commonly used inhalation anesthetics are Ethrane and Forane. They are two of many isomeric ethers which have the molecular formula C₃H₂ClF₅O. In how many of these isomeric ethers are three F atoms bonded to a single carbon atom?