Mass Spectra Interpretation: ETHERS


No. of Questions= 8

ELECTRON IMPACT MASS SPECTROMETRY PRODUCED THE SPECTRA BELOW. MANY PEAKS ARE LABELLED TO AID INTERPRETATION: M/Z (RELATIVE ABUNDANCE).

LOOK AT THE HINTS AND FOLLOW THE WEB REFERENCE LINK FOR HELP. YOU WILL NEED A PERIODIC TABLE, A TABLE OF COMMON ISOTOPES (WHICH YOU CAN FIND IN THE WEB REFERENCE), A CALCULATOR, AND SCRATCH PAPER TO WORK THIS QUIZ.


1 Find the alkyl ion series in the spectra below. (Check the hint!)
      Web Reference      
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a) 29, 43
b) 59, 73
c) none
2 Find the alkyl LOSS ion series in the same spectra shown below. (Check the hint!)
      Web Reference      
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a) 29, 43
b) 59, 73
c) none
3 For this same spectrum, choose the compound that the spectrum represents.
      Web Reference      
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a) ethylene oxalate
b) isobutyl methyl ether
c) 1-ethoxy-2-methyl propane
d) dipropyl ether
e) diisopropyl ether
4 What ion is the most likely candidate to make the m/z 29 peak in the spectrum below?
      Web Reference      
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a) HCO
b) CH2CH3
5 For this same spectrum, choose the compound that the spectrum represents.
      Web Reference      
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a) methoxy-ethane
b) methoxy-ethene
c) dimethyl ether
d) formamide
e) oxetane
6 Choose the compound that this spectrum represents.
      Web Reference      
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a) tetrahydrofuran
b) 2-methoxy propane
c) methyl propyl ether
d) ethyl ether
e) 1-methoxy butane
7 Choose the compound that this spectrum represents.
      Web Reference      
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a) methyl propyl ether
b) 1-methoxy butane
c) 2-methoxy propane
d) tetrahydrofuran
e) ethyl ether
8 Choose the compound that this spectrum represents.
      Web Reference      
Click on image to enlarge
a) 1-ethoxy-2-methyl propane
b) ethylene oxalate
c) isobutyl methyl ether
d) dipropyl ether
e) diisopropyl ether





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