Question 1

Which molecule has a dipole moment of zero?

Accepted Answer

A)  CHCl3
B)  CH2Cl2
C)  ClHC=CH2
D)  trans-ClHC=CHCl
E)  None of these choices.F) A) and D)
G) C) and D)

Question 2

Which molecule does not have a dipole moment?

Accepted Answer

A)   
B)   
C)   
D)   
E)  None of these choices.F) A) and E)
G) B) and D)

Question 3

Examine the following IR spectrum,for substance P (C3H5NO).Which oxygen containing functional group is most likely present in P?

Accepted Answer

Question 4

An example of a tertiary amine is:

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  VF) B) and E)
G) C) and D)

Question 5

Draw a structural formula for C8H18,in which there are two quaternary carbons.

Accepted Answer

Question 6

What group makes up the following aldehyde (benzaldehyde) ?

Accepted Answer

A)  benzyl
B)  phenyl
C)  heptyl
D)  ethyl
E)  None of these choices.F) D) and E)
G) A) and C)

Question 7

What alkyl groups make up the following ether?

Accepted Answer

A)  ethyl and phenyl
B)  propyl and benzyl
C)  ethyl and benzyl
D)  propyl and phenyl
E)  None of these choices.F) A) and E)
G) C) and E)

Question 8

What functional group(s) is/are present in the following compound? o alcohol B) Ether and alcohol C) Ester and ether D) Ester and 1o alcohol E) 1o alcohol and aldehyde" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Ketone and 1o alcohol
B)  Ether and alcohol
C)  Ester and ether
D)  Ester and 1o alcohol
E)  1o alcohol and aldehydeF) A) and C)
G) A) and E)

Question 9

What alkyl groups make up the following ketone?

Accepted Answer

A)  Phenyl,pentyl
B)  Hexyl,phenyl
C)  Benzyl,hexyl
D)  Benzyl,heptyl
E)  None of these choices.F) A) and C)
G) B) and D)

Question 10

For the functional group(s) on the following molecule,what characteristic IR absorption(s) would be expected (ignoring C-H absorptions) ? -1 B) peaks around 1710 and 1650 cm-1 C) peaks around 1650 and 3300 cm-1 D) a peak around 2250 and 3300 cm-1 E) None of these choices." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  peaks around 3300,2150,and 1650 cm-1
B)  peaks around 1710 and 1650 cm-1
C)  peaks around 1650 and 3300 cm-1
D)  a peak around 2250 and 3300 cm-1
E)  None of these choices.F) A) and E)
G) B) and E)

Question 11

An oxygen-containing compound shows strong IR absorption at 1630-1780 cm-1 and 3200-3550 cm-1.What type of compound is it likely to be?

Accepted Answer

A)  an alcohol
B)  a carboxylic acid
C)  an ether
D)  a ketone
E)  an aldehydeF) A) and D)
G) A) and B)

Question 12

Which molecule has a zero dipole moment?

Accepted Answer

A)  SO2
B)  CO2
C)  CO
D)  CHCl3
E)  None of these choices.F) A) and E)
G) A) and C)

Question 13

For the following reaction sequence (it is not necessary to understand the chemistry) what significant overall change(s) would be expected by IR (ignoring C-H absorptions) ? -1 would disappear and nothing new would appear. B) A peak around 1710 cm-1 would disappear and a new peak around 3300 cm-1 would appear. C) A peak around 1650 cm-1 would disappear and nothing new would appear. D) No overall change would be observed. E) None of these choices." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  A peak around 3300 cm-1 would disappear and nothing new would appear.
B)  A peak around 1710 cm-1 would disappear and a new peak around 3300 cm-1 would appear.
C)  A peak around 1650 cm-1 would disappear and nothing new would appear.
D)  No overall change would be observed.
E)  None of these choices.F) A) and D)
G) B) and D)

Question 14

What functional groups are present in nicotine,an addictive substance found in tobacco?

Accepted Answer

A)  two tertiary amines
B)  two secondary amines
C)  phenyl ring and tertiary amine
D)  secondary and tertiary anime
E)  none of these choicesF) A) and E)
G) D) and E)

Question 15

The compound aspartame is a dipeptide that is often used as a sugar substitute.Which functional groups are present in aspartame?

Accepted Answer

A)  carboxylic acid,secondary amine,ketone,ester
B)  alcohol,secondary amine,ketone,ester
C)  carboxylic acid,ester,amide,secondary amine
D)  ester,amide,primary amine,carboxylic acid
E)  none of these choicesF) C) and D)
G) D) and E)

Question 16

For a molecule to possess a dipole moment,which following condition is necessary but not sufficient?

Accepted Answer

A)  three or more atoms in the molecule
B)  presence of one or more polar bonds
C)  a non-linear structure
D)  presence of oxygen or fluorine
E)  absence of a carbon-carbon double or triple bondF) A) and C)
G) C) and D)

Question 17

Which compound would you expect to have the highest boiling point?

Accepted Answer

A)  CH3OCH2CH2OCH3
B)  CH3OCH2OCH2CH3
C)  HOCH2CH2CH2CH2OH
D)  CH3OCH2CH2CH2OH
E)  (CH3O) 2CHCH3F) A) and B)
G) B) and E)

Question 18

The strongest of attractive forces is which type?

Accepted Answer

A)  Dispersion forces
B)  Ion-dipole
C)  Dipole-dipole
D)  Cation-anion
E)  Hydrogen bondsF) B) and C)
G) A) and E)

Question 19

Many bacterial cells contain functional groups that are susceptible to antibiotic drugs,but may,over time,change their functional groups to become resistant to these drugs.What functional group change is occurring in the transition shown below?

Accepted Answer

A)  Amine to ether
B)  Amine to ester
C)  Amide to ester
D)  Amide to ether
E)  None of these choices.F) A) and D)
G) B) and D)

Question 20

Which compound would you expect to have the highest boiling point?

Accepted Answer

A)  ethyl alcohol
B)  ethyl amine
C)  chloroethane
D)  water
E)  ethaneF) A) and E)
G) A) and D)

Exam 2: Families of Carbon

Which compound would you expect to have the highest boiling point?

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The compound aspartame is a dipeptide that is often used as a sugar substitute.Which functional groups are present in aspartame?

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The strongest of attractive forces is which type?

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Which molecule has a dipole moment of zero?

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What alkyl groups make up the following ketone?

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Which compound would you expect to have the highest boiling point?

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For a molecule to possess a dipole moment,which following condition is necessary but not sufficient?

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What alkyl groups make up the following ether?

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What functional groups are present in nicotine,an addictive substance found in tobacco?

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Which molecule has a zero dipole moment?

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What group makes up the following aldehyde (benzaldehyde) ?

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An oxygen-containing compound shows strong IR absorption at 1630-1780 cm-1 and 3200-3550 cm-1.What type of compound is it likely to be?

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For the functional group(s) on the following molecule,what characteristic IR absorption(s) would be expected (ignoring C-H absorptions) ?

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Draw a structural formula for C8H18,in which there are two quaternary carbons.

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Examine the following IR spectrum,for substance P (C3H5NO).Which oxygen containing functional group is most likely present in P?

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For the following reaction sequence (it is not necessary to understand the chemistry) what significant overall change(s) would be expected by IR (ignoring C-H absorptions) ?

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Which molecule does not have a dipole moment?

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Many bacterial cells contain functional groups that are susceptible to antibiotic drugs,but may,over time,change their functional groups to become resistant to these drugs.What functional group change is occurring in the transition shown below?

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What functional group(s) is/are present in the following compound?

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An example of a tertiary amine is:

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An oxygen-containing compound shows strong IR absorption at 1630-1780 cm^-¹ and 3200-3550 cm^-¹.What type of compound is it likely to be?

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Draw a structural formula for C₈H₁₈,in which there are two quaternary carbons.

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Examine the following IR spectrum,for substance P (C₃H₅NO).Which oxygen containing functional group is most likely present in P?

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