Chapter 7 Flashcards
What does mass spectrometry help identify?
Compounds
What is a mass spectrum produced by?
A mass spectrometer
In mass spectrometry, what are the molecules in the sample bombarded with?
Electrons, which remove an electron from the molecule to form a molecular ion, M+
How do you find the molecular mass in a mass spectrometer?
The mass/charge value of the molecular ion peak
What can a molecular ion be broken into?
Smaller fragments, e.g. CH3 +
What happens in infrared spectroscopy?
A beam of infrared radiation is passed through a sample of a chemical. The radiation is absorbed by the covalent bonds in the molecules, increasing their vibrational energy
In infrared spectroscopy, as different bonds absorb different frequencies, why is this useful?
The frequencies can help identify functional groups in the molecule
In infrared spectroscopy, what do the peaks show?
Where radiation is being absorbed
