Practice The Mass Spectrum (12.1.2) - Chapter 12: Spectroscopic Identification of Organic Compounds

Practice: The Mass Spectrum

Lesson 12.1.2Spectroscopic Identification of Organic Compounds

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10 questions

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6 sample questions

Question 1.
What is the process of forming ions in mass spectrometry called?
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Think about the initial stage of mass spectrometry.
Question 2.
What does the base peak in a mass spectrum represent?
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It's related to abundance.
3Question 3.
What is mass spectrometry primarily used for?
- A) Determining molecular mass
- B) Determining molecular weight
- C) Analyzing colors
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Think about the main function of mass spectrometry.
4Question 4.
True or False: The molecular ion peak M $^+$ indicates the intact molecule after losing an electron.
- True
- False
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Consider what happens during ionization.
Question 5.
Given a mass spectrum with peaks at m/z 72 (M $^+$ ), 57 (base peak), and 43, with significant M+1 and M+2 peaks, deduce the likely molecular formula and discuss possible structural units present.
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Analyze the peak at m/z 57 carefully; it may provide clues.
Question 6.
A compound with a molecular ion peak at m/z 98 shows fragment ions at m/z 81, 69, and 43. Discuss how you would approach determining its possible structure.
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Consider common fragmentation patterns for carbon-based compounds.

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