For the mass spectrum of B r 2 , the molecular species give peaks at m/Z ratios of 158, 160, and 162 are needed to be determined. Concept introduction: Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule. Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value. Base peak: It is the tallest peak in the spectrum. B r 2 ionize to form positive ions, B r 2 + a n d B r + . Elements present in B r 2 are 79 B r a n d 81 B r .
For the mass spectrum of B r 2 , the molecular species give peaks at m/Z ratios of 158, 160, and 162 are needed to be determined. Concept introduction: Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule. Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value. Base peak: It is the tallest peak in the spectrum. B r 2 ionize to form positive ions, B r 2 + a n d B r + . Elements present in B r 2 are 79 B r a n d 81 B r .
Interpretation: For the mass spectrum of Br2, the molecular species give peaks at m/Z ratios of 158, 160, and 162 are needed to be determined.
Concept introduction:
Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule.
Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value.
Base peak: It is the tallest peak in the spectrum.
Br2 ionize to form positive ions, Br2+andBr+.
Elements present in Br2 are 79Brand81Br.
(b)
Interpretation Introduction
Interpretation:
For the mass spectrum of Br2, the relative intensities of the peaks has to be explained.
Concept introduction:
Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecules, depending upon the mass of the molecule.
Parent ion peak: It is defined as the prominent peak in the mass spectrum of the molecule which represents the not fragmented molecular ion in the given molecule with greater m/z value.
Base peak: It is the tallest peak in the spectrum.
In the mass spectrum of an unknown organic
compound, the molecular ion had a relative
abundance of 19.0 while the M+1 had a relative
abundance of 1.5.
Estimate the number of carbons in the molecule.
1
4
7
2
LO
5
8
carbons
3
6
9
X
C
*(iii) The reaction of ethene with aqueous potassium manganate(VII), KMNO.,
produces ethane-1,2-diol, CH,OHCH,OH.
Data: molar mass of ethane-1,2-diol = 62 g mol
In an experiment, KMNO, containing only "O reacts with ethene.
Suggest how the mass spectrum of ethane-1,2-diol data could be used
to decide whether the oxygen atoms in ethane-1,2-diol came from the
manganate(VII) ion, water, or a combination of the two.
(2)
Bromine has two naturally occurring isotopes, 79Br , abundance 50.52%, and 81Br, abundance 49.48%. The most stable form of bromine under standard conditions is as the diatomic molecule, Br2 . In a mass spectrum of bromine, at what m/z values would you expect to see peaks and what would you expect the relative height of the peaks to be? What species would account for each peak? Explain.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell