Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Question
Chapter 19, Problem 19.30QAP
Interpretation Introduction
(a)
Interpretation:
The high-resolution proton NMR spectrum of toluene is to be stated.
Concept introduction:
The nuclear magnetic resonance (NMR) instrument analyzes the material’s molecular structure by placing the material in the strong magnetic field and measuring the spins.
The NMR spectroscopy measures the following property of the material molecules.
- Chemical shift:
Appearance of the atomic group composition in the molecule.
- The spin-spin coupling constant:
It provides information about the appearance of the adjacent atoms.
- Relaxation time:
It provides information about molecular dynamics.
- Signal intensity:
It provides the quantitative information about the atomic ratios within a molecule which determines the molecular structure, and proportions of different compounds in a mixture.
Interpretation Introduction
(b)
Interpretation:
The high-resolution proton NMR spectrum of ethylbenzene is to be stated.
Concept introduction:
The nuclear magnetic resonance (NMR) instrument analyzes the material’s molecular structure by placing the material in the strong magnetic field and measuring the spins.
The NMR spectroscopy measures the following property of the material molecules.
- Chemical shift:
Appearance of the atomic group composition in the molecule.
- The spin-spin coupling constant:
It provides information about the appearance of the adjacent atoms.
- Relaxation time:
It provides information about molecular dynamics.
- Signal intensity:
It provides the quantitative information about the atomic ratios within a molecule which determines the molecular structure, and proportions of different compounds in a mixture.
Interpretation Introduction
(c)
Interpretation:
The high-resolution proton NMR spectrum of i- butane.
Concept introduction:
The nuclear magnetic resonance (NMR) instrument analyzes the material’s molecular structure by placing the material in the strong magnetic field and measuring the spins.
The NMR spectroscopy measures the following property of the material molecules.
- Chemical shift:
Appearance of the atomic group composition in the molecule.
- The spin-spin coupling constant:
It provides information about the appearance of the adjacent atoms.
- Relaxation time:
It provides information about molecular dynamics.
- Signal intensity:
It provides the quantitative information about the atomic ratios within a molecule which determines the molecular structure, and proportions of different compounds in a mixture.
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Chapter 19 Solutions
Principles of Instrumental Analysis
Ch. 19 - Prob. 19.1QAPCh. 19 - Prob. 19.2QAPCh. 19 - Prob. 19.3QAPCh. 19 - Prob. 19.4QAPCh. 19 - Prob. 19.5QAPCh. 19 - A nucleus has a spin quantum number of 7/2. How...Ch. 19 - Prob. 19.7QAPCh. 19 - Prob. 19.8QAPCh. 19 - Prob. 19.9QAPCh. 19 - Why is 133C-133C spin-spin splitting not observed...
Ch. 19 - Prob. 19.11QAPCh. 19 - Prob. 19.12QAPCh. 19 - Prob. 19.13QAPCh. 19 - What is a rotating frame of reference?Ch. 19 - How will E for an isolated 13C nucleus compare...Ch. 19 - Prob. 19.16QAPCh. 19 - Prob. 19.17QAPCh. 19 - Prob. 19.18QAPCh. 19 - Prob. 19.19QAPCh. 19 - Prob. 19.20QAPCh. 19 - Prob. 19.21QAPCh. 19 - Prob. 19.22QAPCh. 19 - Prob. 19.23QAPCh. 19 - Prob. 19.24QAPCh. 19 - Prob. 19.25QAPCh. 19 - Prob. 19.26QAPCh. 19 - Prob. 19.27QAPCh. 19 - Prob. 19.28QAPCh. 19 - Prob. 19.29QAPCh. 19 - Prob. 19.30QAPCh. 19 - The proton NMR spectrum in Figure 19.39 is for an...Ch. 19 - The proton NMR spectrum in Figure 19-40 is for a...Ch. 19 - Prob. 19.33QAPCh. 19 - Prob. 19.34QAPCh. 19 - Prob. 19.35QAPCh. 19 - From the proton NMR spectrum in Figure 19-44,...Ch. 19 - From the proton spectrum given in Figure 19-45,...Ch. 19 - Prob. 19.38QAPCh. 19 - Prob. 19.39QAPCh. 19 - Prob. 19.40QAPCh. 19 - Prob. 19.41QAPCh. 19 - Prob. 19.42QAP
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