Separation Flashcards by salama al khatri

Q

Separation

A

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Q

filtration

A

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Q

Gravity filtration

purpose:

requirement:

tips:

A

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Q

Hot filtration

purpose:

requirement:

tips:

A

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Q

Suction Filtration

purpose:

requirement:

tips:

A

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Q

Filter Aids (celite)

purpose:

requirement:

tips:

A

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Q

Soxhlet extraction

purpose:

requirement:

tips:

A

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Q

Centrifugation

purpose:

A

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Q

Recrystalization

A

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Q

Recrystalization single solvent

A

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Q

Which solvent to use in recrystalization

A

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Q

when no single solvent for recrystalization is found

A

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Q

Recrystalization tips

A

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Q

Sublimation

purpose:

requirement:

tips:

A

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Q

Drying solids

purpose:

4 ways

A

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Q

Melting points

A

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Q

melting point range

A

if two compounds are unknown then their m.p will be compared with a known sample. if the melting is the same then it is the same and if it is different then it is the other

if uncertain change the ratio to observe a sig difference

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Q

Reaction workup

A

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Q

Quenching

A

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Q

Quenching agent

A

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Q

What is Liquid liquid extraction ?

requirements

tips

A

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Q

Acid Base extraction

A

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Q

Reaction work up liquid liquid extraction (not complete )

A

hi pg 32-34

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Q

Extraction tips

A

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Q

Partition coeffecient

A

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Q

drying agents

A

removal of water from organic extracts

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Q

Rotary evaporator

A

concentrated sample produced under reduced pressure

Q

Distillation

A

Q

Fractional Distillation

A

Q

Distillation under high vacuum

A

Q

steam distillation

A

Q

nomograph

A

Q

Chromatography

A

Q

What is chromatography

A

Q

Requirements of chromatographic systems

A

Q

Chromatogaraphy separtion subdivision

A

Q

Two chromatography modes

A

Q

Two elution techniques

A

Q

TLC

A

Q

TLC components and interaction

A

Q

TLC method

A

Q

TLC solvent system and polarity

A

Q

TLC visualization

A

Q

Retardation factor

A

Q

preparative column chromatography

what is it

how is it set up

A

Q

preparative column chromatography loading the column

A

Q

column chromatography solvent system

A

Q

preparative column chromatography running the column

A

Q

flash column chromatography and automated flash chromatography

A

Q

Chromatogram

A

Q

chromatogram peak width

A

•Peak width (W_b)

Q

Chromatogram retention time

A

Q

Retention or Capacity Factor (k’)

A

Q

Separation or Selectivity Factor (a)

A

Q

Column Efficiency (N) – Number of theoretical plates

A

Q

Column Efficiency (N)

A

Q

Resolution (Rs)

A

Q

resolution equation

A

Q

What is Gas Chromatography (GC)

A

Q

Gas Chromatography (GC) is used for

A

Q

GC: Advantages

A

Q

GC: Disadvantages

A

Q

GC instrumentation

A

Q

Carrier Gas in GC

A

He and H are quick and gd

Nitrogen high viscosity

Q

Van Deemter Plot

A