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8 Cards in this Set
- Front
- Back
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Why is it important to not spill the FD&C dyes on your skin or clothing? |
Because dyes will stain skin and clothing |
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Define the following terms as they relate to this experiment
ORIGIN ? |
The location of the spotted area |
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Solvent front |
The leading edges of the mobile phase |
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Rf |
Means the retention or retardation factor
= distance traveled by component,cm ______________________ Distance traveled by solvent front cm |
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What will you use a the stationary phase in this experiment ? |
The strip of chromatography paper |
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What will you use as the mobile phase on this experiment? |
The solvent, which will flow through the stationary phase |
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Why is it important to keep the beaker containing the mobile phase covered while preparing your chromatography paper, and developing your chromatograms? |
Because of you don't keep the beaker containing the mobile phase covered while developing your chromatograms, the mobile phase will evaporate , and you will not get any results. |
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Why is it important to remove the chromatography paper from the beaker before the solvent front reaches the top of paper? |
Because you wouldn't be able to measure the rf value unless you can measure the start to front of the solvent on the chromatography paper. |
