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METRIC > Separation > Flashcards

Separation Flashcards

1
Q

Separation

A
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2
Q

filtration

A
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3
Q

Gravity filtration

purpose:

requirement:

tips:

A
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4
Q

Hot filtration

purpose:

requirement:

tips:

A
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5
Q

Suction Filtration

purpose:

requirement:

tips:

A
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6
Q

Filter Aids (celite)

purpose:

requirement:

tips:

A
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7
Q

Soxhlet extraction

purpose:

requirement:

tips:

A
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8
Q

Centrifugation

purpose:

A
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9
Q

Recrystalization

A
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10
Q

Recrystalization single solvent

A
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11
Q

Which solvent to use in recrystalization

A
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12
Q

when no single solvent for recrystalization is found

A
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13
Q

Recrystalization tips

A
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14
Q

Sublimation

purpose:

requirement:

tips:

A
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15
Q

Drying solids

purpose:

4 ways

A
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16
Q

Melting points

A
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17
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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18
Q

Reaction workup

A
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19
Q

Quenching

A
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20
Q

Quenching agent

A
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21
Q

What is Liquid liquid extraction ?

requirements

tips

A
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22
Q

Acid Base extraction

A
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23
Q

Reaction work up liquid liquid extraction (not complete )

A

hi pg 32-34

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24
Q

Extraction tips

A
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25
Q

Partition coeffecient

A
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26
Q

drying agents

A

removal of water from organic extracts

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27
Q

Rotary evaporator

A

concentrated sample produced under reduced pressure

28
Q

Distillation

A
29
Q

Fractional Distillation

A
30
Q

Distillation under high vacuum

A
31
Q

steam distillation

A
32
Q

nomograph

A
33
Q

Chromatography

A
34
Q

What is chromatography

A
35
Q

Requirements of chromatographic systems

A
36
Q

Chromatogaraphy separtion subdivision

A
37
Q

Two chromatography modes

A
38
Q

Two elution techniques

A
39
Q

TLC

A
40
Q

TLC components and interaction

A
41
Q

TLC method

A
42
Q

TLC solvent system and polarity

A
43
Q

TLC visualization

A
44
Q

Retardation factor

A
45
Q

preparative column chromatography

what is it

how is it set up

A
46
Q

preparative column chromatography loading the column

A
47
Q

column chromatography solvent system

A
48
Q

preparative column chromatography running the column

A
49
Q

flash column chromatography and automated flash chromatography

A
50
Q

Chromatogram

A
51
Q

chromatogram peak width

A

•Peak width (Wb)

52
Q

Chromatogram retention time

A
53
Q

Retention or Capacity Factor (k’)

A
54
Q

Separation or Selectivity Factor (a)

A
55
Q

Column Efficiency (N) – Number of theoretical plates

A
56
Q

Column Efficiency (N)

A
57
Q

Resolution (Rs)

A
58
Q

resolution equation

A
59
Q

What is Gas Chromatography (GC)

A
60
Q

Gas Chromatography (GC) is used for

A
61
Q

GC: Advantages

A
62
Q

GC: Disadvantages

A
63
Q

GC instrumentation

A
64
Q

Carrier Gas in GC

A

He and H are quick and gd

Nitrogen high viscosity

65
Q

Van Deemter Plot

A

METRIC (2 decks)

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