chromatography

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5 Terms

1
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Why do we need to use chromatography

to separate out mixtures.

2
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How do we carry out this practicle?

Get filtered paper

USING A PENCIL draw a straight line at the bottom of filtered paper

add spots of different inks at the line that was drawn.

Get your solvent and put the filtered paper in a position where it is dipped into solvent.

Wait for results.

3
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How does chromatography seperate mixtures

Different dyes will move up the paper at different timings.

4
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why do we use a pencil to draw out the line?

Because pencils are insoluble to the solvent.

5
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How would we calculate the rf value?

Distance travelled by solute / distance travelled by solvent