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Chapter 13: Q50P (page 612)

A mass spectrum shows significant peaks at m/z = 87, 115, 140, and 143. Which of the following compounds is responsible for that mass spectrum?

Short Answer

Expert verified

The compound is

Step by step solution

01

Mass spectrometry

It is defined as the method to identify the molecular mass of the compound by the charge to mass ratio or by the molecular ion peak production. After getting the molecular formula we can find the degree of unsaturation and determine the possible structure of the compound.

02

Mass spectra are shown by compound

The molecular weight of each alcohol is 158 and the mass to charge ratio peak is at 140 due to loss of water and each alcohol show such peaks.

The peak is produced due to a mass to charge ratio of 87,115,144 are due to the loss of group with five carbon C5H11and methyl group.

But in 2,4,4-trimethyl 4-heptanol losses, all three groups via all have cleavage leading to no mass spectrometry absorption.


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Most popular questions from this chapter

A compound is known to be one of those shown here. What absorption bands in its IR spectrum allow you to identify the compound?

For each of the following pairs of compounds, identify one IR absorption band that could be used to distinguish between them:

a.

b.

c.

d.

e.

f.cis-2-butene and trans-2-butene

g.

h.

i.

j.

k.

l.

Which shows an absorption band at a larger wavenumber: a carbonyl group bonded to a sp3 carbon or a carbonyl group bonded to an sp2 carbon of an alkene?

What peaks in their mass spectra can be used to distinguish between the following compounds?

Which one of the following five compounds produced the IR spectrum shown below?
See all solutions

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