o-chem exp 2 - extraction
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10 Terms
extraction
a way to remove a solute from a solution by mixing an immiscible solvent
immiscible
a liquid that will not mix with another solvent to form a homogeneous solution
solvent extraction
solutes moves from original solution to added solvent
- occurs because the solute is more soluble in the new solvent (the extract) than in the original one, causing it to transfer and separate
immiscible solvent
used in the extraction so that it can be physically removed and thereby remove the solute of interest
Kd
this distribution coefficient measures the concentration of solute in original solution and extracted solvent
solute concentration in organic layer / solute concentration in aqueous layer
Kd formula
organic solvent and aqueous solution
Kd is measured between an
the pH
what changes protonation of solute which changes its solubility in water
salting out
used to promote solutes moving into extracting solvent
polar
in salting out, the salt makes the aqueous phase more