Separation Techniques

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  1. Decant/Filter and Vacuum Filtration
    • a) solid non polar
    • b) liquid polar
    • - interchangeable
  2. Distillation
    • 2 liquids
    • same polarity
    • BP >20 degrees celsius
  3. Sep Funnel
    • 2 liquids
    • 1. polar
    • 2. nonpolar
  4. Column Chromatography
    • 2 liquids
    • slight difference in polarity
  5. Washing Out
    • 2 solids
    • 1) polar
    • 2) nonpolar
  6. Recrystallization
    • 2 solids
    • slight differences in polarity
  7. Extraction
    To obtain a pure liquid, sample of the product after reflux.
  8. Use of a drying agent
    Removal of the final traces of water after synthesis.
  9. Remove solvent
    used after decant of drying agent to remove diethyl either (rinse).
  10. TLC
    • verify purity of sample
    • shows relative polarities
  11. IR
    show prity of the product.
  12. Melting point
    purity determination.
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71603
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Separation Techniques
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sep techniques cards
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