Extraction (Worksheet)

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Jun 11, 2021
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- Chromatography IV – Ion-Exchange Chromatography (Worksheet)
- Worksheets: Analytical Chemistry II

Thomas Wenzel
Bates College

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Devise a way to separate the materials in the following sample by performing an extraction.
The sample consists of water with a complex mixture of trace levels of organic compounds. The compounds can be grouped into broad categories of organic acids, organic bases and neutral organics. The desire is to have three solutions at the end, each in methylene chloride, one of which contains only the organic acids, the second contains only the organic bases, the third contains only the neutrals.

Remember - Ions are more soluble in water than in organic solvents.

- Neutrals are more soluble in organic solvents than in water.
Devise a way to solubilize the organic anion shown below in the organic solvent of a two-phase system in which the second phase is water. As a first step to this problem, show what might happen to this compound when added to such a two-phase system.

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