Mass Spectroscopy (HSC SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of energy does mass spectroscopy use to analyze substances?
What type of energy does mass spectroscopy use to analyze substances?
High-energy electrons
What is the charge on a molecular ion after one electron is knocked off during ionization?
What is the charge on a molecular ion after one electron is knocked off during ionization?
+1
Which two factors determine how much an ion is deflected in the magnetic field?
Which two factors determine how much an ion is deflected in the magnetic field?
Mass and charge
What types of particles are detected in mass spectrometry?
What types of particles are detected in mass spectrometry?
Only positively charged ions (cations)
What is the base peak in a mass spectrum?
What is the base peak in a mass spectrum?
The tallest peak in the spectrum
What does the m/z value of the parent molecular ion peak reveal?
What does the m/z value of the parent molecular ion peak reveal?
The molar mass of the original compound
What fragment ion corresponds to an m/z value of 15?
What fragment ion corresponds to an m/z value of 15?
(methyl group)
When a molecular ion fragments, which products are detected by the mass spectrometer?
When a molecular ion fragments, which products are detected by the mass spectrometer?
Only the cation
What does a peak that is 17 mass units less than the parent peak suggest?
What does a peak that is 17 mass units less than the parent peak suggest?
Loss of a hydroxyl group (OH)
In the ionization chamber, what makes the molecular ion a radical?
In the ionization chamber, what makes the molecular ion a radical?
It has an unpaired electron