Lec 16 Flashcards
1
Q
Method for solvent removal
A
1) open dish evaporation (boil of the solvent)
2) distillation
3) rotary evaporator
2
Q
About open dish evaporation
A
Pros: easy to handle and inexpensive
Cons: solvent is released into air instead of being collected in a containing vessel
3
Q
2 type of distillation
A
1) simple
2) fractional
4
Q
Adv and cons for distillation
A
Adv: no Vapour release in to the air
Solvent can be recycled
Cons : time consuming
5
Q
Why need set up to operate under vacuum
A
Reduce boiling points of solvents for faster evaporation
6
Q
3 concern for rotovap
A
1)implosion
2)explosion
3)hazardous waste
