Which of the following gives rise to a prominent peak in the mass spectrum with m/z of M - 31?

Question

Quizplus · Accepted Answer

The m/z value of 131 suggests the presence of an ester group (-COO-) in the molecule. Among the given options, only methyl hexanoate has the formula C7H14O2 which fits the given m/z value by losing a methyl group (−CH3). Therefore, it gives rise to a prominent peak in the mass spectrum. The other options do not have the same molecular formula as the given m/z value and are unlikely to give rise to a peak at 131.

Which of the Following Gives Rise to a Prominent Peak