Question 1

The off-resonance decoupling in 13C NMR allows for ________ splitting.

Accepted Answer

A)   (12C-13
C)  
B)   (12C-1H) 
C)   (13C-13
C)  
D)   (13C-1H) 
E)   none of theseF) A) and B)
G) A) and C)

Question 2

How many signals would you expect in the 1H NMR spectrum of the following compound?

Accepted Answer

Question 3

Presence of which of the following protons is confirmed by D2O exchange?

Accepted Answer

A)   OH
B)   NH2
C)   CH
D)   A & B
E)   none of theseF) A) and C)
G) A) and D)

Question 4

Which of the following compounds will display only three singlets in its 1H NMR spectrum? 1H NMR spectrum?   A)  I B)  II C)  III D)  IV E)  V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) None of the above
G) C) and D)

Question 5

List the most common nuclei that are used in NMR.

Accepted Answer

The answer of List the most common nuclei that are...

Question 6

How many signals would you expect in the 1H NMR spectrum of HOCH2CH2CH2CH2OH?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) C) and D)
G) A) and E)

Question 7

Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet?

Accepted Answer

A)   1,1-dichloropropane
B)   1,3-dichloropropane
C)   1,2-dichloropropane
D)   2,2-dichloropropane
E)   1-chloropropaneF) A) and B)
G) B) and E)

Question 8

Which of the following is not a common solvent used for acquiring a 1H NMR spectrum?

Accepted Answer

A)   CDCl3
B)   CCl4
C)   CD3CN
D)   CH3OH
E)   D2OF) A) and B)
G) A) and C)

Question 9

NMR is an abbreviation for ____________ ____________ __________.

Accepted Answer

nuclear ma...

Question 10

Predict the chemical shifts for the signals in the 1H NMR spectrum for the following compound.

Accepted Answer

Question 11

Which of the indicated protons in the following compound would appear most upfield in the 1H NMR spectrum? 1H NMR spectrum?   A)  I B)  II C)  III D)  IV E)  I & III" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 12

A compound, with molecular formula C4H9Br, displays the following 1H NMR and 13C NMR spectra. Propose a structure for this compound.

Accepted Answer

Question 13

Draw a structure, with a formula of C5H13N, which has an integration of 9H, 3H, 1H.

Accepted Answer

Question 14

Which of the following compounds, with molecular formula C9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT 9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT         A)  I B)  II C)  III D)  IV E)  None of these" class="answers-bank-image d-inline" rel="preload" > 9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT         A)  I B)  II C)  III D)  IV E)  None of these" class="answers-bank-image d-inline" rel="preload" > 9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT         A)  I B)  II C)  III D)  IV E)  None of these" class="answers-bank-image d-inline" rel="preload" > 9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT         A)  I B)  II C)  III D)  IV E)  None of these" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   None of theseF) A) and E)
G) B) and D)

Question 15

Which of the following compounds is consistent with the 13C NMR spectrum shown below? 13C NMR spectrum shown below?     A)  I B)  II C)  III D)  IV E)  V" class="answers-bank-image d-inline" rel="preload" > 13C NMR spectrum shown below?     A)  I B)  II C)  III D)  IV E)  V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) C) and D)
G) None of the above

Question 16

Which of the following is true about the number of signals in a 1H NMR spectrum?

Accepted Answer

A)   it indicates the number of neighboring protons
B)   it indicates the electronic environment of neighboring protons
C)   it indicates the number of different kinds of protons
D)   it indicates the electronic environment of absorbing protons
E)   it indicates the number of protons in the signalF) B) and D)
G) A) and B)

Question 17

Which of the following compounds will display four signals in its 13C NMR spectrum?

Accepted Answer

A)   2,6-dimethylheptane
B)   2,4-dimethylheptane
C)   3,5-dimethylheptane
D)   4,4-dimethylheptane
E)   3,4-dimethylheptaneF) A) and E)
G) B) and D)

Question 18

Determine the multiplicity and predict the chemical shifts of each signal in the expected 1H NMR spectrum of the following compound.

Accepted Answer

Question 19

Which of the following carbon atoms will display the signal most downfield in the 13C NMR spectrum? 13C NMR spectrum?   A)  I B)  II C)  III D)  IV E)  V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 20

The 1H NMR spectrum of bromoethane shows a signal at 3.5 ppm when the spectrum is recorded using a 60 MHz spectrometer. Where do you expect to see the signal if a 300 MHz instrument is used instead?

Accepted Answer

A)   3.5 ppm
B)   7.5 ppm
C)   6.8 ppm
D)   5.8 ppm
E)   none of theseF) B) and C)
G) None of the above

Exam 15: Nuclear Magnetic Resonance Spectroscopy

Determine the multiplicity and predict the chemical shifts of each signal in the expected ¹H NMR spectrum of the following compound.

Correct Answer
verified

Predict the chemical shifts for the signals in the ¹H NMR spectrum for the following compound.

Correct Answer
verified

List the most common nuclei that are used in NMR.

Correct Answer
verified

A compound, with molecular formula C₄H₉Br, displays the following ¹H NMR and ¹³C NMR spectra. Propose a structure for this compound.

Correct Answer
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Which of the following compounds is consistent with the ¹³C NMR spectrum shown below?

Correct Answer
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Which of the following is not a common solvent used for acquiring a ¹H NMR spectrum?

Correct Answer
verified

How many signals would you expect in the ¹H NMR spectrum of the following compound?

Correct Answer
verified

Presence of which of the following protons is confirmed by D₂O exchange?

Correct Answer
verified

Which of the following compounds will display four signals in its ¹³C NMR spectrum?

Correct Answer
verified

How many signals would you expect in the ¹H NMR spectrum of HOCH₂CH₂CH₂CH₂OH?

Correct Answer
verified

The ¹H NMR spectrum of bromoethane shows a signal at 3.5 ppm when the spectrum is recorded using a 60 MHz spectrometer. Where do you expect to see the signal if a 300 MHz instrument is used instead?

Correct Answer
verified

NMR is an abbreviation for __ .

Correct Answer
verified
nuclear ma...
View Answer

Which of the following compounds will display only three singlets in its ¹H NMR spectrum?

Correct Answer
verified

Correct Answer
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Which of the indicated protons in the following compound would appear most upfield in the ¹H NMR spectrum?

Correct Answer
verified

Draw a structure, with a formula of C₅H₁₃N, which has an integration of 9H, 3H, 1H.

Correct Answer
verified

Which of the following carbon atoms will display the signal most downfield in the ¹³C NMR spectrum?

Correct Answer
verified

The off-resonance decoupling in ¹³C NMR allows for ________ splitting.

Correct Answer
verified

Which of the following compounds gives a ¹H NMR spectrum consisting of only a singlet?

Correct Answer
verified

Which of the following is true about the number of signals in a ¹H NMR spectrum?

Correct Answer
verified

Exam 15: Nuclear Magnetic Resonance Spectroscopy

Determine the multiplicity and predict the chemical shifts of each signal in the expected 1H NMR spectrum of the following compound.

Correct AnswerverifiedShow Answer

Predict the chemical shifts for the signals in the 1H NMR spectrum for the following compound.

Correct AnswerverifiedShow Answer

List the most common nuclei that are used in NMR.

Correct AnswerverifiedShow Answer

A compound, with molecular formula C4H9Br, displays the following 1H NMR and 13C NMR spectra. Propose a structure for this compound.

Correct AnswerverifiedShow Answer

Which of the following compounds is consistent with the 13C NMR spectrum shown below?

Correct AnswerverifiedShow Answer

Which of the following is not a common solvent used for acquiring a 1H NMR spectrum?

Correct AnswerverifiedShow Answer

How many signals would you expect in the 1H NMR spectrum of the following compound?

Correct AnswerverifiedShow Answer

Presence of which of the following protons is confirmed by D2O exchange?

Correct AnswerverifiedShow Answer

Which of the following compounds will display four signals in its 13C NMR spectrum?

Correct AnswerverifiedShow Answer

How many signals would you expect in the 1H NMR spectrum of HOCH2CH2CH2CH2OH?

Correct AnswerverifiedShow Answer

The 1H NMR spectrum of bromoethane shows a signal at 3.5 ppm when the spectrum is recorded using a 60 MHz spectrometer. Where do you expect to see the signal if a 300 MHz instrument is used instead?

Correct AnswerverifiedShow Answer

NMR is an abbreviation for ____________ ____________ __________.

Correct Answerverifiednuclear ma...View AnswerShow Answer

Which of the following compounds will display only three singlets in its 1H NMR spectrum?

Correct AnswerverifiedShow Answer

Which of the following compounds, with molecular formula C9H18O2, is consistent with the 1H NMR and 13C NMR spectra shown below? SHAPE \* MERGEFORMAT

Correct AnswerverifiedShow Answer

Which of the indicated protons in the following compound would appear most upfield in the 1H NMR spectrum?

Correct AnswerverifiedShow Answer

Draw a structure, with a formula of C5H13N, which has an integration of 9H, 3H, 1H.

Correct AnswerverifiedShow Answer

Which of the following carbon atoms will display the signal most downfield in the 13C NMR spectrum?

Correct AnswerverifiedShow Answer

The off-resonance decoupling in 13C NMR allows for ________ splitting.

Correct AnswerverifiedShow Answer

Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet?

Correct AnswerverifiedShow Answer

Which of the following is true about the number of signals in a 1H NMR spectrum?

Correct AnswerverifiedShow Answer

Determine the multiplicity and predict the chemical shifts of each signal in the expected ¹H NMR spectrum of the following compound.

Correct Answer
verified

Predict the chemical shifts for the signals in the ¹H NMR spectrum for the following compound.

Correct Answer
verified

Correct Answer
verified

A compound, with molecular formula C₄H₉Br, displays the following ¹H NMR and ¹³C NMR spectra. Propose a structure for this compound.

Correct Answer
verified

Which of the following compounds is consistent with the ¹³C NMR spectrum shown below?

Correct Answer
verified

Which of the following is not a common solvent used for acquiring a ¹H NMR spectrum?

Correct Answer
verified

How many signals would you expect in the ¹H NMR spectrum of the following compound?

Correct Answer
verified

Presence of which of the following protons is confirmed by D₂O exchange?

Correct Answer
verified

Which of the following compounds will display four signals in its ¹³C NMR spectrum?

Correct Answer
verified

How many signals would you expect in the ¹H NMR spectrum of HOCH₂CH₂CH₂CH₂OH?

Correct Answer
verified

The ¹H NMR spectrum of bromoethane shows a signal at 3.5 ppm when the spectrum is recorded using a 60 MHz spectrometer. Where do you expect to see the signal if a 300 MHz instrument is used instead?

Correct Answer
verified

NMR is an abbreviation for __ .

Correct Answer
verified
nuclear ma...
View Answer

Which of the following compounds will display only three singlets in its ¹H NMR spectrum?

Correct Answer
verified

Correct Answer
verified

Which of the indicated protons in the following compound would appear most upfield in the ¹H NMR spectrum?

Correct Answer
verified

Draw a structure, with a formula of C₅H₁₃N, which has an integration of 9H, 3H, 1H.

Correct Answer
verified

Which of the following carbon atoms will display the signal most downfield in the ¹³C NMR spectrum?

Correct Answer
verified

The off-resonance decoupling in ¹³C NMR allows for ________ splitting.

Correct Answer
verified

Which of the following compounds gives a ¹H NMR spectrum consisting of only a singlet?

Correct Answer
verified

Which of the following is true about the number of signals in a ¹H NMR spectrum?

Correct Answer
verified