Paper Chromatography Flashcards
1
Q
What is chromatography used for?
A
Can be used to separate a mixture of soluble substances and can give information to help identify substances.
2
Q
What is the paper called in chromatography?
A
-the stationary phase
3
Q
What is the solvent in chromatography called?
A
-mobile phase
4
Q
How can chromatography be used to distinguish between pure and impure substances?
A
- pure substance will only form one spot in any solvent
- impure substance will form more than one spot
5
Q
What is the Rf value?
A
the distance the compound has risen divided by the distance the solvent has risen.
6
Q
What is the equation for Rf?
A
Rf = distance moved/solvent
