Paper Chromotography

Question 1

What is the mobile phase?

Answer 1

When the molecules can move.

Question 2

What is the stationary phase?

Answer 2

When the molecules can’t move.

Question 3

What happens?

Answer 3

Equilibrium is made between the phases.
Draw pencil line at bottom of filter paper.
Spot of ink on line.
Place sheet in beaker of solvent.
Ink isn’t touching solvent or it will dissolve.
Solvent steeps up paper carrying ink.
Each dot moves at different rates.
End result is chromatogram.

Question 4

What is R value?

Answer 4

Rf=
distance travelled by substance
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Distance traveled by solvent