Chromatography

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  • Created by: MattJG
  • Created on: 26-01-17 22:24
Chromatography is used to separate substances from a what?
Mixture
1 of 15
What is the phase called where molecules can move?
Mobile
2 of 15
What is the phase called where molecules can't move?
Stationary
3 of 15
Chemicals which spend more time in the mobile phase, go what through the stationary phase?
Further
4 of 15
Chromatography paper is the what phase?
Stationary
5 of 15
The solvent is the what phase?
Mobile
6 of 15
Substance A moved 33cm - the solvent moved 35 cm - what is the rf value?
0.94
7 of 15
Substance B moved 14cm - the solvent moved 35 cm - what is the rf value?
0.4
8 of 15
Substance C moved 21cm - the solvent moved 35 cm - what is the rf value?
0.6
9 of 15
The ration between the distance travelled by solvent and substance is called the what value?
Rf
10 of 15
If molecules are more soluble will the spend more or less time in the stationary phase?
Less
11 of 15
If molecules are less attracted to the paper will the spend more or less time in the mobile phase?
More
12 of 15
The Rf value is dependent on the what?
Solvent
13 of 15
What is usually the solvent in chromatography?
Water
14 of 15
What is usually the stationary phase in chromatography?
Paper
15 of 15

Other cards in this set

Card 2

Front

What is the phase called where molecules can move?

Back

Mobile

Card 3

Front

What is the phase called where molecules can't move?

Back

Preview of the front of card 3

Card 4

Front

Chemicals which spend more time in the mobile phase, go what through the stationary phase?

Back

Preview of the front of card 4

Card 5

Front

Chromatography paper is the what phase?

Back

Preview of the front of card 5
View more cards

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