Chem Sep Flashcards

1
Q

Why are LLEs better than Column chromatrographies?

A

they require less time and less solvent

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2
Q

solvent

A

Substance that dissolves solute in a solution

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3
Q

immiscible layers

A

layers that form when components that do not mix are combined

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4
Q

Two immiscible layers in this experiment are what?

A

Organic layer and Aqueous layer

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5
Q

The organic layer is

A

Non-polar

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6
Q

The aqueous layer is

A

Polar

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7
Q

What affects solubility

A

Polarity, charge under acidic/neutral/basic conditions, pH of the aqueous solution

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8
Q

Non-polar molecule

A

A molecule with a zero or near-zero dipole moment

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9
Q

Biphasic mixture

A

A mixture of two immiscible phases

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10
Q

Polar molecule

A

A molecule with a non-zero molecular dipole moment

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11
Q

A substance will be soluble in another if

A

their intermolecular interactions decrease the energy of the chemical system

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12
Q

LDF’s

A

Non-Polar molecules experience this, they will be found in the organic layers bc of LDF’s

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13
Q

Dipole-Dipole interactions

A

Polar molecules experience this

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14
Q

H bonding

A

dipole interactions between H, N, F and O

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15
Q

Ion-dipole

A

Ions are soluble in POLAR because charges interact with electronegativites

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16
Q

Functional groups

A

an atom or group within a molecule with a specific bonding pattern

Examples: Carboxylic, Amine, Alcohol

17
Q

Why is deprotonating the molecule important

A

the conjugate base can underfo ion-dipole interactions

18
Q

Acids will be found in

A

organic layer in acidic conditions
organic layer in neutral conditions
basic aqueous layer

19
Q

Bases will be found in

A

organic layer in basic and neutral conditions
acidic aqueous layer

20
Q

Equation of concentration

A

K = C0/Ca

K = (Total - extracted)/Volume of organic/(extracted)/V of aqueous