3.6 Organic Analysis

Question 1

What is a nitrile homologous group?

Answer 1

_
N = C

Question 2

What is the homologous group for amine?

Answer 2

NH2

Question 3

What is the definition of the molecular ion?

Answer 3

M —> [M]+ + e-
Molecule with one electron knocked off

Question 4

When is high resolution mass spectrometry used?

Answer 4

Identifying different molecules with the same molecular mass when rounded to the nearest whole number
Measures to 4 decimal places

Question 5

What is the M +2 peak?

Answer 5

Contains Cl or Br
Depends on the isotopes of Cl or Br

Question 6

What effect does infrared have on bonds?

Answer 6

Makes them vibrate

Question 7

Why are new analytical techniques are better than old lab methods?

Answer 7

More accurate
More sensitive
Faster

Question 8

What does infra red spectroscopy say about the molecule?

Answer 8

The types of bonds

Question 9

How can IR be used to identify the molecule?

Answer 9

Each bond vibrates at different frequency which can be transcribed using a fingerprint region

Question 10

What is the link between absorption and global warming?

Answer 10

C=O absorbs more infrared radiation in the atmosphere so heat can get trapped