Question 1

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

Accepted Answer

A)  CH3CH(OCH3)2 
B)  CH3OCH2CH2CH2CH2OCH3 
C)  CH3OCH2CH2OCH3 
D)  CH3OCH2CH(OH)CH3 
A)  CH3CH(OCH3)2 
B)  CH3OCH2CH2CH2CH2OCH3 
C)  CH3OCH2CH2OCH3 
D)  CH3OCH2CH(OH)CH3

Question 2

Which of the following combinations of peaks appears in the 1H NMR spectrum of diethyl ether, CH3CH2OCH2CH3?

Accepted Answer

A)  a triplet and a doublet 
B)  a quartet and a sextet 
C)  two singlets 
D)  a triplet and a quartet 
A)  a triplet and a doublet 
B)  a quartet and a sextet 
C)  two singlets 
D)  a triplet and a quartet

Question 3

Which C6H12O2 compound gives the following 1H NMR spectrum?

Accepted Answer

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

Question 4

Which feature in the 1H NMR spectrum provides information about the relative number of each type of proton in a compound?

Accepted Answer

A)  number of signals 
B)  integral 
C)  splitting 
D)  chemical shift 
A)  number of signals 
B)  integral 
C)  splitting 
D)  chemical shift

Question 5

Which C4H9Br compound gives a triplet at approximately 3.5 ppm in the 1H NMR spectrum?

Accepted Answer

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

Question 6

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2-methylpropane?

Accepted Answer

A)  two singlets 
B)  a singlet and a nonet 
C)  a singlet and a decet 
D)  a doublet and a decet 
A)  two singlets 
B)  a singlet and a nonet 
C)  a singlet and a decet 
D)  a doublet and a decet

Question 7

What is the appearance of the signal corresponding to the CH2 protons in the 1H NMR spectrum of ethyl methyl ether, CH3CH2OCH3?

Accepted Answer

A)  a doublet 
B)  a triplet 
C)  a quartet 
D)  a septet 
A)  a doublet 
B)  a triplet 
C)  a quartet 
D)  a septet

Question 8

Which of the following compounds have enantiotopic protons? 1.propane
2.butane
3.2-methylpropane

Accepted Answer

A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3 
A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3

Question 9

Which feature in the 1H NMR spectrum provides information about the electronic environment of the protons in a compound?

Accepted Answer

A)  number of signals 
B)  integral 
C)  splitting 
D)  chemical shift 
A)  number of signals 
B)  integral 
C)  splitting 
D)  chemical shift

Question 10

Identify the compound (C4H6O2) that gives the following 1H NMR spectrum.

Accepted Answer

methyl pro

Question 11

What is the hydrogen deficiency index for a compound with a molecular formula of C6H6Br2?

Accepted Answer

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

Question 12

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?

Accepted Answer

A)  only i 
B)  only iii 
C)  only i and iii 
D)  iii and iv 
A)  only i 
B)  only iii 
C)  only i and iii 
D)  iii and iv

Question 13

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

Accepted Answer

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

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

Which of the following combinations of peaks appears in the ¹H NMR spectrum of diethyl ether, CH₃CH₂OCH₂CH₃?

Which C₆H₁₂O₂ compound gives the following ¹H NMR spectrum?

Which feature in the ¹H NMR spectrum provides information about the relative number of each type of proton in a compound?

Which C₄H₉Br compound gives a triplet at approximately 3.5 ppm in the ¹H NMR spectrum?

Which of the following combinations of peaks appears in the ¹H NMR spectrum of 2-methylpropane?

What is the appearance of the signal corresponding to the CH₂ protons in the ¹H NMR spectrum of ethyl methyl ether, CH₃CH₂OCH₃?

Which of the following compounds have enantiotopic protons? 1.propane 2.butane 3.2-methylpropane

Which feature in the ¹H NMR spectrum provides information about the electronic environment of the protons in a compound?

Identify the compound (C₄H₆O₂) that gives the following ¹H NMR spectrum.

What is the hydrogen deficiency index for a compound with a molecular formula of C₆H₆Br₂?

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?

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

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Filters

Exam 13: Nuclear Magnetic Resonance Spectroscopy

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

Which of the following combinations of peaks appears in the 1H NMR spectrum of diethyl ether, CH3CH2OCH2CH3?

Which C6H12O2 compound gives the following 1H NMR spectrum?

Which feature in the 1H NMR spectrum provides information about the relative number of each type of proton in a compound?

Which C4H9Br compound gives a triplet at approximately 3.5 ppm in the 1H NMR spectrum?

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2-methylpropane?

What is the appearance of the signal corresponding to the CH2 protons in the 1H NMR spectrum of ethyl methyl ether, CH3CH2OCH3?

Which of the following compounds have enantiotopic protons? 1.propane 2.butane 3.2-methylpropane

Which feature in the 1H NMR spectrum provides information about the electronic environment of the protons in a compound?

Identify the compound (C4H6O2) that gives the following 1H NMR spectrum.

What is the hydrogen deficiency index for a compound with a molecular formula of C6H6Br2?

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?

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

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Filters

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

Which of the following combinations of peaks appears in the ¹H NMR spectrum of diethyl ether, CH₃CH₂OCH₂CH₃?

Which C₆H₁₂O₂ compound gives the following ¹H NMR spectrum?

Which feature in the ¹H NMR spectrum provides information about the relative number of each type of proton in a compound?

Which C₄H₉Br compound gives a triplet at approximately 3.5 ppm in the ¹H NMR spectrum?

Which of the following combinations of peaks appears in the ¹H NMR spectrum of 2-methylpropane?

What is the appearance of the signal corresponding to the CH₂ protons in the ¹H NMR spectrum of ethyl methyl ether, CH₃CH₂OCH₃?

Which feature in the ¹H NMR spectrum provides information about the electronic environment of the protons in a compound?

Identify the compound (C₄H₆O₂) that gives the following ¹H NMR spectrum.

What is the hydrogen deficiency index for a compound with a molecular formula of C₆H₆Br₂?

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?

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