Studied by 15 peopledistillation definition
separation of miscible liquids based on differences in boiling points used to purify a liquid and determine boiling point
fractional distillation
technique used to separate substances with relatively similar boiling points
fractional distillation lab
4 keck clips, fractioning column
simple distillation
technique used to separate substances with significantly different boiling points
simple distillation lab
3 keck clips
why is it important to position the thermometer properly in distillation
to obtain accurate boiling point readings
what happens to the boiling point readings if the thermometer is too high
bp reading too low
what happens to the boiling point readings if the thermometer is too low
bp reading too high
when would you separate by distillation rather than column chromatography, extraction, and decantation/filtration
when separating miscible liquids
how would distillation plot be helpful for identifying unknown liquids
it would show the bp range that we could then compare with literature
distillation unique characteristics
separation based on boiling point
column chromatography unique characteristics
separation based on polarity
both column chromatography and distillation
used for separation of liquids
miscible definition
liquid substances that are mutually soluble in all proportions
why are acetone and water miscible (intermolecular forces)
opportunity for hydrogen bonding
fractionating column purpose
provides surface area for condensation cycles to take place
given a mixture of a polar (l) and polar (l) OR nonpolar (l) and nonpolar (l), how would you separate them
distillation
when would separation not be possible
Δbp <20°
given a mixture of a polar (l) and nonpolar (l), how would you separate them
separatory funnel
approximate boiling point of ethyl acetate
~75°C
approximate boiling point of acetic acid
~120°C
given a mixture of a nonpolar (s) and polar (l), how would you separate them
decant/filtration
Note
Flashcard