Question

GCMS Data: Briefly discuss how the GC-MS supports the identity of the product. In your discussion of the GC-MS data, include: a) the molecular ion M* and its corresponding m/z value from the spectrum; b) the base peak (i.e. the peak with highest abundance) and its corresponding m/z. Explain how the GC-MS data allow you to tell whether the reaction was successful or not. In your discussion, include things such as (but not limited to): presence of any major impurities, whether the reaction went to completion or not, etc.
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Answer 1

1. In GCMS spectra includes the GC peaks corresponding to mass of that particular chemical component.so u can easily identify the purity as well as mass of each chemical present in a given sample.
2. In given GCMS , the peak at 4.95 show the purity and Mass spectrum belongs shows the a) Molecular ion peak at 136.1 indicates phenyl acetate mass.b) a base peak at 94 indicate most stable ion peak of phenol confirm that the presence of phenol ring in the structure.
3. Yes by GCMS data , you can tell the reaction is completed or not . Because if reaction sample is contain the starting material it is also comes in GCMS spectra . You can monitor the reaction by GCMS whether the reaction is completed or not by observing the starting material peak conversion to product formation peak in your reaction.as well as you can monitor the what type of impurities are formed during the reaction. In this way reaction monitoring ias also possible by GCMS.