Practice Mass Spectrometry (ms) (12.1) - Chapter 12: Spectroscopic Identification of Organic Compounds

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9 questions

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6 sample questions

Question 1.
What does mass spectrometry analyze?
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Think about what the mass spectrum reveals about a molecule.
Question 2.
Which peak in a mass spectrum is the most abundant?
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This peak is often set to 100% abundance.
3Question 3.
What does mass spectrometry primarily measure?
- A) Light absorption
- B) Molecular mass and structure
- C) Temperature
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Look at the purpose of mass spectrometry.
4Question 4.
True or False: The base peak represents the molecular ion.
- True
- False
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Consider how these peaks differ.
Question 5.
A mass spectrum shows M $^+$ at m/z 98 and an M+1 peak at 8% of M $^+$ . Estimate the number of carbon atoms in the compound.
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Recall the calculations for estimating carbon from isotope peaks.
Question 6.
If a compound shows a prominent M $^+$ at 100 m/z, a base peak at 50 m/z, and fragment ions at 70 m/z and 40 m/z, discuss the possible structure based on the fragment ions.
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Consider how bonds might break to form those fragments.

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