extraction Flashcards

1
Q

most likely, which layer will be on top and bottom

A

the organic layer is usually on top
the aqueous phase is usually on the bottom

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2
Q

what is the main case where organic layer is more dense than aqueous layer

A

chlorinated solvents tend to be more dense than water
EX: dichloromethane or chloroform

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3
Q

what is the main physical property that makes extraction (specifically the separation into different layers) possible

A

differences in solubility

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4
Q

how does solubility come into play in extraction

A

compounds are altered so they become soluble in either the organic or aqueous phase. They move into different phases in order to isolate compounds away from others.

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5
Q

what is the main chemical property that makes acid-base extraction possible

A

pH level

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6
Q

why is pH level important in acid-base extraction

A

when a strong acid is added to the impure mixture, it will only react with the compounds that can be protonated. same is true vice versa

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7
Q

what are compounds commonly converted into if we want them to tavel into the aqueous layer

A

a salt

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