Phase Equilibria

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Author:
Anonymous
ID:
192099
Filename:
Phase Equilibria
Updated:
2013-01-10 14:34:14
Tags:
Chemistry
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Description:
Advanced Higher Chemistry - Unit Two - Phase Equilibria
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  1. When a solute is shaken in two immiscible liquids it partitions itself between the two liquids in a definite ratio called the...?
    partition coefficient
  2. What does the value of the partition coefficient depend on?
    • The immiscible liquids involved
    • The solute
    • The temperature
  3. What is an application of the partition of a solute beetween two liquids?
    Solvent extraction
  4. What is an application of solvent extraction?
    The purification of water
  5. What do chromatographic separations depend on?
    The partition equilibrium between two phases - one stationary and the other mobile
  6. What are examples of different types of chromatography?
    • Paper chromatography
    • Gas liquid chromatography
  7. In paper chromatography, what are the stationary and mobiler phases?
    • Stationary - the water held on the paper
    • Mobile - Another solvent
  8. In gas liquid chromatography, what are the stationary and mobile phases?
    • Stationary - a liquid held on a solid support
    • Mobile - a gas
  9. What is the formula used to work out the Rf value?
    Rf = distance travelled by compound / distance travelled by solvent

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