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Organic Chemistry 1

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Mass Spectral Problem MW 184: Distinguish Isomers

ORGO1-ABPNKZ

You are using mass spectrometry to distinguish between the two isomers below, each with molecular mass equal to 184 g/mol.

Image by Daniel J. Berger. Created for Albert.io. Copyright 2016. All rights reserved.

Which of the mass peaks listed would you expect to uniquely identify one of the two isomers?

A

Large peak at m/z 184, with another peak at m/ 186. The peak at 184 is three times the intensity of the peak at 186.

B

Large peak at m/z 169, with a peak $\frac{1}{3}$ as large at 171.

C

Large peak at m/z 153, with a peak $\frac{1}{3}$ as large at 155.

D

Large peak at m/z 149.