Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
Why is it important to not spill the FD&C dyes on your skin or clothing? |
Because dyes will stain skin and clothing |
|
Define the following terms as they relate to this experiment
ORIGIN ? |
The location of the spotted area |
|
Solvent front |
The leading edges of the mobile phase |
|
Rf |
Means the retention or retardation factor
= distance traveled by component,cm ______________________ Distance traveled by solvent front cm |
|
What will you use a the stationary phase in this experiment ? |
The strip of chromatography paper |
|
What will you use as the mobile phase on this experiment? |
The solvent, which will flow through the stationary phase |
|
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. |
|
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. |