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Mass Spectra Interpretation: ALCOHOLS


No. of Questions= 9

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 Identify the molecular ion in this spectrum.
      Web Reference      
Click on image to enlarge
a) 45
b) 46
c) 47
2 For this same spectrum, choose the compound that the spectrum represents.
      Web Reference      
Click on image to enlarge
a) formic acid
b) 1-propanol
c) ethanol
d) methanol
e) isopropyl alcohol
3 Find the alkyl ion series in the spectrum below. (Check the hint!)
      Web Reference      
Click on image to enlarge
a) 15, 29, 43, 57
b) 31, 45
c) none
4 Find the alkyl LOSS ion series in the same spectra shown below. (Check the hint!)
      Web Reference      
Click on image to enlarge
a) 15, 29, 43, 57
b) 31, 45
c) none
5 For the same spectrum shown in the previous two questions, choose the compound that the spectrum represents.
      Web Reference      
Click on image to enlarge
a) 2-methyl-2-propanol
b) 1-butanol
c) 2-butanol
d) 1-pentanol
e) 2-methyl-1-propanol
6 Identify the molecular ion in this spectrum.
      Web Reference      
Click on image to enlarge
a) 70
b) 71
c) 87
d) 88
7 For the same spectrum, choose the compound that the spectrum represents.
      Web Reference      
Click on image to enlarge
a) 1-hexanol
b) 1-pentanol
c) 2-methyl-2-butanol
d) 2-pentanol
e) 1-butanol
8 Choose the compound that this spectrum represents.
      Web Reference      
Click on image to enlarge
a) 2-methyl-2-butanol
b) 2-methyl-2-propanol
c) 2-butanol
d) 1-butanol
e) 2-methyl-1-propanol
9 Choose the compound that this spectrum represents.
      Web Reference      
Click on image to enlarge
a) 2-pentanol
b) 2-methyl-2-propanol
c) 1-butanol
d) 2-methyl-1-propanol
e) 2-butanol





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