Question

Question 1 (1 point)

What's measured in mass spectrometry?

Frequency
Atomic number
Mass
Molecular weight

Question 2 (1 point)

In a mass spectrum, which peak indicates the
molecular weight of the compound being
analyzed?

Base peak
M +1 peak
Molecular ion peak
Fragment peak

Question 3 (1 point)

Based on fragmentation patterns, how many
distinct peaks would you expect to see in the
mass spectrum of n-propane?

Question 5 (0.25 points

Alkyl bromides and alkyl chlorides can be
differentiated by analysis of the M+2 peak
True
False

Question 6 (0.25 points)

A molecule that does not contain N atoms
exhibits an even molecular ion
True
False

Question 7 (0.25 points)

The M +1 peak results from 13C, the most
abundant C isotope
True
False

Question 8 (0.25 points)

Based on the IR spectrum of a regular alcohol (p.
477), it is fair to say that O-H bonds require
more energy to vibrate than C-H bonds.

True
False

Answer 1

Ans.1. Mass. 2.molecular ion peak. 3. Five peaks. 5.true. 6.true 7.true (1.1 percent is C). 8. True.