fa
, Lab 1
Slating
cmpd Impurity a Neutral from an Acid
Extraction technique solute is transferred from solvent to another (due to solubility) separate the neutral cmpd
·
:
in which a one to
done with a separatory funnel ; the solute is more soluble in the 2nd solvent than the 1st
evaporate the 2nd solvent using
·
a warm water bath
Find melting point to get identity Acid
·
Neutral + Impurity
I
+ 10 ml ether
2x + SmL NaOH
·
Find 90 of extracted crupd in total unknown
-
top
ether NaOH (bottom)
zextracta
acid impurity
enuinelet
·
pressure oute se
0 .
129/0 38g
.
=
0 32x100 =
. 32%
emer bottom
↳A 20
·↓
Setigating the solubility & miscibility of liquids
miscibility the ability of liquid pairs to form "like dissolves like"
·
: one layer
-
in
·
mem
solutes and solvents with similar polarities are
Alcohol (nonpolar)
more soluble.
(nonpolar molecule
malonic Acid soluble soluble insoluble insoluble >
polar molecule
=
Biphenyl insoluble insoluble soluble insoluble
~
nonpolar molecule
Alcohols Water Hexane
I-octanol insoluble soluble Inonpolar water & ethanol miscible
water & diethyl ether immiscible
I-butanol insoluble soluble <nonpolar water & methylene chloride immiscible
water& hexane immiscible
methyl soluble insoluble < Hexane & methylene chloride miscible
polar
Alcohol
, Lab 1
Slating
cmpd Impurity a Neutral from an Acid
Extraction technique solute is transferred from solvent to another (due to solubility) separate the neutral cmpd
·
:
in which a one to
done with a separatory funnel ; the solute is more soluble in the 2nd solvent than the 1st
evaporate the 2nd solvent using
·
a warm water bath
Find melting point to get identity Acid
·
Neutral + Impurity
I
+ 10 ml ether
2x + SmL NaOH
·
Find 90 of extracted crupd in total unknown
-
top
ether NaOH (bottom)
zextracta
acid impurity
enuinelet
·
pressure oute se
0 .
129/0 38g
.
=
0 32x100 =
. 32%
emer bottom
↳A 20
·↓
Setigating the solubility & miscibility of liquids
miscibility the ability of liquid pairs to form "like dissolves like"
·
: one layer
-
in
·
mem
solutes and solvents with similar polarities are
Alcohol (nonpolar)
more soluble.
(nonpolar molecule
malonic Acid soluble soluble insoluble insoluble >
polar molecule
=
Biphenyl insoluble insoluble soluble insoluble
~
nonpolar molecule
Alcohols Water Hexane
I-octanol insoluble soluble Inonpolar water & ethanol miscible
water & diethyl ether immiscible
I-butanol insoluble soluble <nonpolar water & methylene chloride immiscible
water& hexane immiscible
methyl soluble insoluble < Hexane & methylene chloride miscible
polar
Alcohol
