Chapter 17 - Spectroscopy Flashcards
1
Q
What is mass spectrometry used for?
A
To identify the molecular mass of an organic compound
2
Q
what happens to an organic compound in a mass spectrometer?
A
it loses an electron and forms a positive ion
3
Q
what is the new ion formed called?
A
the molecular ion
4
Q
why does the m+1 peak exist?
A
1.1% of carbon is present as the carbon-13 isotope
5
Q
what happens during fragmentation?
A
some molecular ions break down into smaller pieces
6
Q
what effect does IR radiation have on covalent bonds?
A
makes them bend and stretch
7
Q
What is infrared spectroscopy used for?
A
to identify functional groups
8
Q
What are the uses for IR spectroscopy?
A
Detecting pollutions and breathalysers
9
Q
what are three practices in identifying molecules?
A
- elemental analysis
- mass spectrometry
- infrared spectroscopy
