Question 1

Which of the following compounds would give a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals? 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?   A)  only i B)  only iii C)  only i and iii D)  iii and iv" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   only i
B)   only iii
C)   only i and iii
D)   iii and ivE) A) and B)
F) C) and D)

Question 2

Identify the physical factor that influences the coupling constant.

Accepted Answer

A)   Hybridization
B)   Cryomagnetic ratio
C)   Chemical exchange
D)   Karplus empirical formulaE) A) and B)
F) A) and C)

Question 3

How many signals appear in the proton-decoupled 13C NMR spectrum of 2-bromotoluene?

Accepted Answer

A)   3
B)   4
C)   5
D)   7E) A) and B)
F) None of the above

Question 4

Which of the following combinations of peaks appears in the 1H NMR spectrum of 1,4-dimethyoxyethane, CH3OCH2CH2CH2CH2OCH3?

Accepted Answer

A)   three singlets
B)   a singlet, a triplet, and a quintet
C)   a singlet and two triplets
D)   a doublet and a tripletE) A) and B)
F) A) and C)

Question 5

Identify the most appropriate intensity maintained for a pure ethanol NMR spectrum.

Accepted Answer

A)   1:2:3
B)   5:1
C)   4:3:2
D)   6:3:1E) A) and D)
F) B) and C)

Question 6

Which of the protons in the following molecule appear at the highest δ-value in the 1H NMR spectrum? 1H NMR spectrum?   A)  i B)  ii C)  iii D)  iv" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   i
B)   ii
C)   iii
D)   ivE) A) and B)
F) A) and C)

Question 7

Consider the following structure. Answer the following questions by placing the appropriate number in the blank to the left. 
-_____The number of nonsinglet splitting patterns in the 1H NMR of this compound.

Accepted Answer

Question 8

Consider the compound shown below.  The above compound would produce a signal further downfield in a 13C NMR spectrum than

Accepted Answer

A) True 
 B)False

Question 9

Predict the splitting of each of the numbered hydrogen atoms in the structure below in a S1U1P11S1S1P0H NMR spectrum. Identify as singlet, doublet, triplet, quartet, quintet, sextet, septet, .... Place the correct splitting in the blank to the left of the number. 
-______ 1

Accepted Answer

The answer of Predict the splitting of each of the...

Question 10

All of the following would produce nuclear magnetic resonance: 2H, 14N, 16O, and 19F.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)   CH3OCH2CH2OCH2CH3
B)   CH3OCH2CH2CH2CH2OH
C)   CH3OC(CH3) 2OCH3
D)   CH3OCH2CH(CH3) OCH3E) A) and C)
F) C) and D)

Question 12

Identify the compound (C4H8O2) that gives the following 1H NMR spectrum.

Accepted Answer

ethyl acet...

Question 13

What is the relative area of the six peaks in a sexet in an 1H NMR spectrum?

Accepted Answer

A)   1:2:3:3:2:1
B)   1:3:6:6:3:1
C)   1:5:10:10:5:1
D)   1:6:15:15:6:1E) None of the above
F) All of the above

Question 14

How many signals appear in the proton-decoupled 13C NMR spectrum of 1,4-dibromobenzene?

Accepted Answer

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

Question 15

Which of the carbon atoms in the following molecule appears furthest downfield in the 13C NMR spectrum? 13C NMR spectrum?   A)  i B)  ii C)  iii D)  iv" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   i
B)   ii
C)   iii
D)   ivE) A) and B)
F) A) and C)

Question 16

The following compound will have a 1H NMR spectrum that consists of:  two triplets and a singlet, area ratio 3:3:4.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2,3-dimethylbutane?

Accepted Answer

A)   two doublets
B)   a doublet and a septet
C)   a singlet and two doublets
D)   a doublet and an octetE) B) and D)
F) B) and C)

Question 18

How many sets of equivalent protons are there in 3-methylhexane?

Accepted Answer

A)   2
B)   3
C)   6
D)   7E) All of the above
F) A) and B)

Question 19

Which C4H9Br compound(s)  gives a 13C NMR spectrum consisting of four signals? 4H9Br compound(s)  gives a 13C NMR spectrum consisting of four signals?   A)  only 1 B)  only 1 and 2 C)  only 2 and 3 D)  1, 2, 3 and 4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   only 1
B)   only 1 and 2
C)   only 2 and 3
D)   1, 2, 3 and 4E) B) and D)
F) B) and C)

Question 20

Which C8H10 compound gives the following 1H NMR spectrum? 8H10 compound gives the following 1H NMR spectrum?   A)  1 B)  2 C)  3 D)  4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Exam 13: Nuclear Magnetic Resonance Spectroscopy

The following compound will have a 1H NMR spectrum that consists of: two triplets and a singlet, area ratio 3:3:4.

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Which of the carbon atoms in the following molecule appears furthest downfield in the 13C NMR spectrum?

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Identify the physical factor that influences the coupling constant.

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Consider the compound shown below. The above compound would produce a signal further downfield in a 13C NMR spectrum than

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

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How many sets of equivalent protons are there in 3-methylhexane?

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All of the following would produce nuclear magnetic resonance: 2H, 14N, 16O, and 19F.

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Identify the most appropriate intensity maintained for a pure ethanol NMR spectrum.

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Which of the protons in the following molecule appear at the highest δ-value in the 1H NMR spectrum?

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How many signals appear in the proton-decoupled 13C NMR spectrum of 1,4-dibromobenzene?

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Predict the splitting of each of the numbered hydrogen atoms in the structure below in a 1H NMR spectrum. Identify as singlet, doublet, triplet, quartet, quintet, sextet, septet, .... Place the correct splitting in the blank to the left of the number. -______ 1

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How many signals appear in the proton-decoupled 13C NMR spectrum of 2-bromotoluene?

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Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of four signals?

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Identify the compound (C4H8O2) that gives the following 1H NMR spectrum.

Correct Answerverifiedethyl acet...View AnswerShow Answer

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2,3-dimethylbutane?

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Consider the following structure. Answer the following questions by placing the appropriate number in the blank to the left. -_____The number of nonsinglet splitting patterns in the 1H NMR of this compound.

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What is the relative area of the six peaks in a sexet in an 1H NMR spectrum?

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Which C8H10 compound gives the following 1H NMR spectrum?

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Which of the following combinations of peaks appears in the 1H NMR spectrum of 1,4-dimethyoxyethane, CH3OCH2CH2CH2CH2OCH3?

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Which of the following compounds would give a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?

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The following compound will have a ¹H NMR spectrum that consists of: two triplets and a singlet, area ratio 3:3:4.

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Which of the carbon atoms in the following molecule appears furthest downfield in the ¹³C NMR spectrum?

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Consider the compound shown below. The above compound would produce a signal further downfield in a ¹³C NMR spectrum than

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

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All of the following would produce nuclear magnetic resonance: ²H, ¹⁴N, ¹⁶O, and ¹⁹F.

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Which of the protons in the following molecule appear at the highest δ-value in the ¹H NMR spectrum?

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How many signals appear in the proton-decoupled ¹³C NMR spectrum of 1,4-dibromobenzene?

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Predict the splitting of each of the numbered hydrogen atoms in the structure below in a ¹H NMR spectrum. Identify as singlet, doublet, triplet, quartet, quintet, sextet, septet, .... Place the correct splitting in the blank to the left of the number. -______ 1

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How many signals appear in the proton-decoupled ¹³C NMR spectrum of 2-bromotoluene?

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Which C₄H₉Br compound(s) gives a ¹³C NMR spectrum consisting of four signals?

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Identify the compound (C₄H₈O₂) that gives the following ¹H NMR spectrum.

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ethyl acet...
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Which of the following combinations of peaks appears in the ¹H NMR spectrum of 2,3-dimethylbutane?

Correct Answer
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Consider the following structure. Answer the following questions by placing the appropriate number in the blank to the left. -_____The number of nonsinglet splitting patterns in the ¹H NMR of this compound.

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What is the relative area of the six peaks in a sexet in an ¹H NMR spectrum?

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Which C₈H₁₀ compound gives the following ¹H NMR spectrum?

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Which of the following combinations of peaks appears in the ¹H NMR spectrum of 1,4-dimethyoxyethane, CH₃OCH₂CH₂CH₂CH₂OCH₃?

Correct Answer
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Which of the following compounds would give a ¹H NMR spectrum consisting of two singlets and a ¹³C NMR consisting of consisting of three signals?

Correct Answer
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