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chemistry🧪
chemical analysis
chromatography
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Created by
Mimi Butler
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Cards (11)
chromatography is
used
to
separate
mixtures
What is chromatography used for?
To
separate mixtures
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What is the stationary phase in chromatography?
Paper
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Why is a pencil line used in chromatography?
To prevent the ink
from dissolving in
the solvent
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What is the mobile phase in chromatography?
Solvent
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What happens if the solvent is above the pencil line in chromatography?
The ink
will dissolve in
the solvent
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What factors determine how far the ink moves in chromatography?
The
attraction
to the
stationary phase
The
solubility
in the
mobile phase
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How does solubility affect the distance ink travels in chromatography?
More soluble substances travel further
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What is the formula for calculating Rf values in chromatography?
\( Rf=distance moved by substance/distance moved by solvent
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What does Rf stand for in chromatography?
Retention factor
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What does the Rf value indicate in chromatography?
It
indicates
how
far
a
substance
has
moved
relative to the
solvent
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