Chromatography Flashcards
1
Q
What is chromatograhy used for
A
allows chemists to seperate substances in complex mixtures
2
Q
What is the stationary phase in TLC
A
chromatography paper
3
Q
What is the mobile phase in TLC
A
solvent
4
Q
Why does the spot move in TLC
A
polarity
mass
5
Q
Whatis GAS CHROMATOGRAPHY used for
A
to seperate complex mixtures
6
Q
If a substance peaks at the beginning, what does that mean?
A
greater affinity for MOBILE phase
small molecular mass
7
Q
If a substance peaks at the end, what does that mean?
A
greater affinity for STATIONARY phase
big mollecular mass
8
Q
What is the mobile phase in gas chromatography
A
inert gas
9
Q
what is the stationary phase in group 8?
A
inert liquid or solid
