Answered: 100 139 MS-NW-3158 80 111 [M]* 20…

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Chemistry

100 139 MS-NW-3158 80 111 [M]* 20 [M+2]* 25 50 75 100 125 150 m/z Relative Intensity 유

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter7: Components Of Optical Instruments

Section: Chapter Questions

Problem 7.16QAP

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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

The mass spectrum of compound E with the molecular formula C8H7ClO is shown below.

Draw the most likely ion fragment for the signals at m/z 111 and 139.

Why do these signals at m/z 113, 141, and 156 appear as pairs with similar intensities at m/z 111, 139, and 154?

100
HS-NW-3158
139
80
111
[M]*
20
[M+2]*
25
50
75
100
125
150
m/z
Relative Intensity
유

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