Question 1

How many signals will be observable in the DEPT 13C NMR spectrum of naphthalene (shown below)?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 10 
A) 0 
B) 1 
C) 2 
D) 3 
E) 10

Question 2

Deduce the identity of the following compound from the 1H NMR spectral data given.
C7H12O4 : δ 1.1 (6H, triplet), 3.4 (2H, singlet), 4.2 (4H, quartet)(ppm)

Accepted Answer

Question 3

Deduce the structure from the data given: C8H10O; 13C NMR δ (coupling): 140 (s), 128 (d), 126 (d), 122 (d), 60 (t), 15 (q).

Accepted Answer

Question 4

Which of the following protons gives an NMR signal with the lowest chemical shift value (farthest upfield)? F-CH2CH2CH2CH2CH2-Br
1 2 3 4 5

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 5

Deduce the structure from the data given: C7H16O; 1H NMR δ (integration, coupling): 0.9 (9H, s), 1.5 (2H, t), 3.5 (3H, s), 3.8 (2H, t).

Accepted Answer

Question 6

How many distinct carbon signals are expected in the proton-decoupled 13C NMR spectrum of the compound below?

Accepted Answer

Question 7

A compound gave a signal at 203 ppm in the 13C NMR spectrum. How would it be possible to tell if the compound is an aldehyde or a ketone in a proton-coupled 13C NMR spectrum?

Accepted Answer

The aldehyde carbony

Question 8

Can alkenes and aromatics be easily distinguished from each other in an 13C NMR spectrum?

Accepted Answer

Alkenes are in the range of 10

Question 9

If the frequency for flipping a 1H nucleus at an applied field of 1.4092 Tesla is 60 MHz, what would be the applied magnetic field if the frequency is 360 MHz?

Accepted Answer

A) 8)4552 Tesla 
B) 0)2349 Tesla 
C) 1)4092 Tesla 
D) 4)2577 Tesla 
E) 3)0439 Tesla 
A) 8)4552 Tesla 
B) 0)2349 Tesla 
C) 1)4092 Tesla 
D) 4)2577 Tesla 
E) 3)0439 Tesla

Question 10

What is the ratio of the protons in the following compound?

Accepted Answer

A) 3:3:3:2 
B) 6:3:2 
C) 9:2 
D) 3:2 
E) 6:2 
A) 3:3:3:2 
B) 6:3:2 
C) 9:2 
D) 3:2 
E) 6:2

How many signals will be observable in the DEPT ¹³C NMR spectrum of naphthalene (shown below)?

Deduce the identity of the following compound from the ¹H NMR spectral data given. C₇H₁₂O₄ : δ 1.1 (6H, triplet), 3.4 (2H, singlet), 4.2 (4H, quartet)(ppm)

Deduce the structure from the data given: C₈H₁₀O; ¹³C NMR δ (coupling): 140 (s), 128 (d), 126 (d), 122 (d), 60 (t), 15 (q).

Which of the following protons gives an NMR signal with the lowest chemical shift value (farthest upfield)? F-CH₂CH₂CH₂CH₂CH₂-Br 1 2 3 4 5

Deduce the structure from the data given: C₇H₁₆O; ¹H NMR δ (integration, coupling): 0.9 (9H, s), 1.5 (2H, t), 3.5 (3H, s), 3.8 (2H, t).

How many distinct carbon signals are expected in the proton-decoupled ¹³C NMR spectrum of the compound below?

A compound gave a signal at 203 ppm in the ¹³C NMR spectrum. How would it be possible to tell if the compound is an aldehyde or a ketone in a proton-coupled ¹³C NMR spectrum?

Can alkenes and aromatics be easily distinguished from each other in an ¹³C NMR spectrum?

If the frequency for flipping a ¹H nucleus at an applied field of 1.4092 Tesla is 60 MHz, what would be the applied magnetic field if the frequency is 360 MHz?

What is the ratio of the protons in the following compound?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, Radicals

Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Exam 15: Nmr Spectroscopy

How many signals will be observable in the DEPT 13C NMR spectrum of naphthalene (shown below)?

Deduce the identity of the following compound from the 1H NMR spectral data given. C7H12O4 : δ 1.1 (6H, triplet), 3.4 (2H, singlet), 4.2 (4H, quartet)(ppm)

Deduce the structure from the data given: C8H10O; 13C NMR δ (coupling): 140 (s), 128 (d), 126 (d), 122 (d), 60 (t), 15 (q).

Which of the following protons gives an NMR signal with the lowest chemical shift value (farthest upfield)? F-CH2CH2CH2CH2CH2-Br 1 2 3 4 5

Deduce the structure from the data given: C7H16O; 1H NMR δ (integration, coupling): 0.9 (9H, s), 1.5 (2H, t), 3.5 (3H, s), 3.8 (2H, t).

How many distinct carbon signals are expected in the proton-decoupled 13C NMR spectrum of the compound below?

A compound gave a signal at 203 ppm in the 13C NMR spectrum. How would it be possible to tell if the compound is an aldehyde or a ketone in a proton-coupled 13C NMR spectrum?

Can alkenes and aromatics be easily distinguished from each other in an 13C NMR spectrum?

If the frequency for flipping a 1H nucleus at an applied field of 1.4092 Tesla is 60 MHz, what would be the applied magnetic field if the frequency is 360 MHz?

What is the ratio of the protons in the following compound?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, Radicals

Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

How many signals will be observable in the DEPT ¹³C NMR spectrum of naphthalene (shown below)?

Deduce the identity of the following compound from the ¹H NMR spectral data given. C₇H₁₂O₄ : δ 1.1 (6H, triplet), 3.4 (2H, singlet), 4.2 (4H, quartet)(ppm)

Deduce the structure from the data given: C₈H₁₀O; ¹³C NMR δ (coupling): 140 (s), 128 (d), 126 (d), 122 (d), 60 (t), 15 (q).

Which of the following protons gives an NMR signal with the lowest chemical shift value (farthest upfield)? F-CH₂CH₂CH₂CH₂CH₂-Br 1 2 3 4 5

Deduce the structure from the data given: C₇H₁₆O; ¹H NMR δ (integration, coupling): 0.9 (9H, s), 1.5 (2H, t), 3.5 (3H, s), 3.8 (2H, t).

How many distinct carbon signals are expected in the proton-decoupled ¹³C NMR spectrum of the compound below?

A compound gave a signal at 203 ppm in the ¹³C NMR spectrum. How would it be possible to tell if the compound is an aldehyde or a ketone in a proton-coupled ¹³C NMR spectrum?

Can alkenes and aromatics be easily distinguished from each other in an ¹³C NMR spectrum?

If the frequency for flipping a ¹H nucleus at an applied field of 1.4092 Tesla is 60 MHz, what would be the applied magnetic field if the frequency is 360 MHz?