Partition Coefficient Flashcards
Define extraction.
A general term for the recovery of a substance from a mixture by bringing it in contact with a solvent that preferentially dissolves the desired material
When doing extractions can the initial mixture be a solid or a liquid?
Both, there are liquid/liquid extractions and solid/liquid extractions.
The liquid/liquid extraction is important because it involves the…
distribution of a solute between two immiscible solvents.
Define immiscible.
The solvents do not mix.
What is in the bottom of our tube in the liq/liq extraction?
Dichloromethane (DCM)
What is the density of DCM?
1.32 g/ml
T/F: We can throw things away as soon as we finish that step.
False
What is another way to say partition coefficient?
Distribution Coefficient
Give the formula for the distribution coefficient.
Kd=(grams of C in organic solvent/mL of organic solvent)/(grams of C in water/mL of water)
Is it better to do multiple small extractions or one large extraction?
Multiple small extractions
What is our drying agent?
Anhydrous Calcium Chloride Pellets
What do we add to the reaction tube to prevent it from boiling over?
Boiling Stick
What is the temperature controller called?
Variac
What do we use to heat everything?
Sand Bath
What setting do we turn on the variac to boil off the dichloromethane?
1-2
