paper chromatogrpahy Flashcards
1
Q
paper chromatography is used to
A
separate soluble substances in a mixture (usually of dye)
2
Q
mobile phase
A
a substance where to molecules are able to move eg liquid or gas
3
Q
stationary phase
A
molecules can’t move eg solid or a thick liquid - in this experiment it is the PAPER
4
Q
why should pencil be used to mark the baseline?
A
Pen ink would dissolve in the solvent and move up the paper
