Chapter 12- separations and purifications Flashcards by Ryan Soueity | Brainscape

Q

Simple distillation vs vacuum distillation vs fractional distillation

A

simple: not above 150
If superheating: gas bubbles but no evaporation
vacuum: above 150 (lower pressure to boil easily)
fractional: separate liquids with close BP (<25C apart)

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Q

Gas chromatography

A

1st peak is most volatile (less polar)

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Q

Liquid chromatography

A

Brine: salt water

Rf= distance solute travelled/ distance solvent travelled
H bonding affects Rf

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