Type of species produced when energy electron impacts molecule in an ionization chamber
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1. When a high energy electron impacts molecule M in the ionization chamber of a mass spectrometer, what type of species is initially produced?
a) cation
b) anion
c) radical cation
d) radical anion
Question 2
What compound would be expected to show intense IR absorption at 3300 cm-1?
a. 2-butyne
b. butane
c.1-butene
d.1-butyne
Question 3
Ethyne (H-C=C-H) does not show IR absorption in the region 2000-2500 cm-1 because:
a. there is no change in the dipole moment when the CC bond in ethyne stretches
b.there is a change in the dipole moment when the CC bond in ethyne stretches.
c.C-H stretches occur at lower energies.
d.CC stretches occur at about 1640 cm-1.
Which compound would show a larger than usual M+2 peak?
a. CH3CH2SCH3
b. (CH3)2CHNH2
c. CH3CH2CO2H
d. CH3(CH2)2CH3
Question 5
Which of the following fragment peaks would not be expected in n-hexane?
a. 43
b. 57
c.71
d. 87
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Question 1
When a high energy electron impacts molecule M in the ionization chamber of a mass spectrometer, what type of species is ...
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