Separation

Question 1

Separation

Answer 1

Question 2

filtration

Answer 2

Question 3

Gravity filtration

purpose:

requirement:

tips:

Answer 3

Question 4

Hot filtration

purpose:

requirement:

tips:

Answer 4

Question 5

Suction Filtration

purpose:

requirement:

tips:

Answer 5

Question 6

Filter Aids (celite)

purpose:

requirement:

tips:

Answer 6

Question 7

Soxhlet extraction

purpose:

requirement:

tips:

Answer 7

Question 8

Centrifugation

purpose:

Answer 8

Question 9

Recrystalization

Answer 9

Question 10

Recrystalization single solvent

Answer 10

Question 11

Which solvent to use in recrystalization

Answer 11

Question 12

when no single solvent for recrystalization is found

Answer 12

Question 13

Recrystalization tips

Answer 13

Question 14

Sublimation

purpose:

requirement:

tips:

Answer 14

Question 15

Drying solids

purpose:

4 ways

Answer 15

Question 16

Melting points

Answer 16

Question 17

melting point range

Answer 17

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

Question 18

Reaction workup

Answer 18

Question 19

Quenching

Answer 19

Question 20

Quenching agent

Answer 20

Question 21

What is Liquid liquid extraction ?

requirements

tips

Answer 21

Question 22

Acid Base extraction

Answer 22

Question 23

Reaction work up liquid liquid extraction (not complete )

Answer 23

hi pg 32-34

Question 24

Extraction tips

Answer 24

Question 25

Partition coeffecient

Answer 25

Question 26

drying agents

Answer 26

removal of water from organic extracts

Question 27

Rotary evaporator

Answer 27

concentrated sample produced under reduced pressure

Question 28

Distillation

Answer 28

Question 29

Fractional Distillation

Answer 29

Question 30

Distillation under high vacuum

Answer 30

Question 31

steam distillation

Answer 31

Question 32

nomograph

Answer 32

Question 33

Chromatography

Answer 33

Question 34

What is chromatography

Answer 34

Question 35

Requirements of chromatographic systems

Answer 35

Question 36

Chromatogaraphy separtion subdivision

Answer 36

Question 37

Two chromatography modes

Answer 37

Question 38

Two elution techniques

Answer 38

Question 39

TLC

Answer 39

Question 40

TLC components and interaction

Answer 40

Question 41

TLC method

Answer 41

Question 42

TLC solvent system and polarity

Answer 42

Question 43

TLC visualization

Answer 43

Question 44

Retardation factor

Answer 44

Question 45

preparative column chromatography what is it how is it set up

Answer 45

Question 46

preparative column chromatography loading the column

Answer 46

Question 47

column chromatography solvent system

Answer 47

Question 48

preparative column chromatography running the column

Answer 48

Question 49

flash column chromatography and automated flash chromatography

Answer 49

Question 50

Chromatogram

Answer 50

Question 51

chromatogram peak width

Answer 51

•Peak width (W_b)

Question 52

Chromatogram retention time

Answer 52

Question 53

Retention or Capacity Factor (k’)

Answer 53

Question 54

Separation or Selectivity Factor (a)

Answer 54

Question 55

Column Efficiency (N) – Number of theoretical plates

Answer 55

Question 56

Column Efficiency (N)

Answer 56

Question 57

Resolution (Rs)

Answer 57

Question 58

resolution equation

Answer 58

Question 59

What is Gas Chromatography (GC)

Answer 59

Question 60

Gas Chromatography (GC) is used for

Answer 60

Question 61

GC: Advantages

Answer 61

Question 62

GC: Disadvantages

Answer 62

Question 63

GC instrumentation

Answer 63

Question 64

Carrier Gas in GC

Answer 64

He and H are quick and gd Nitrogen high viscosity

Question 65

Van Deemter Plot

Answer 65