Experiment 18: Chromatographic Separation for AP Chemistry
For a quick review on stoichiometry, refer to the following concepts:
- Structures and Intermolecular Forces for AP Chemistry
- The Liquid State for AP Chemistry
- The Solid State for AP Chemistry
- Phase Diagrams and Phase Changes for AP Chemistry
Two or more substances are separated by the differences in their affinity to paper or some other material. This affinity is related to the intermolecular forces between the substances. (See the chapter on Solids, Liquids, and Intermolecular Forces.)
- capillary tubes
- test tube(s)
- ion-exchange resin or silica gel
- chromatography paper (filter paper)
In some cases, the distance a spot travels on the chromatographic media is measured. This requires the use of a ruler.
There are usually no calculations.
Instead of an ion exchange resin or silica gel, it is possible to use filter paper as a chromatographic medium.
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