Unformatted text preview: Part 3: Liquid-Liquid Extraction Theory
Illustrate the mechanism (using specific curved arrows to show the flow of electrons ) for the reaction that
occurred when you added 3.0 M NaOH(aq) to your separatory funnel. For each individual species, indicate
3
4
is in the organic layer, aqueous layer or if it is a precipitate. [3 Marks]
Aqueous layer
OH Na
p- bluic acid
( weak acid )
Sodium hydroxide
Conjugate base
Conjugate acid
proton donor "
(strong base )
"proton acceptor
Good!
only missing the layers
that each compound
stays in (-1). The un-
Illustrate the mechanism (using arrows to show the flow of electrons) for the reaction that occurStayedin the organic
charged p-Toluic acid
you added 12 M HCI(aq) to your beaker. For each individual species, indicate if it is in the organisybayer,
aqueous layer or if it is a precipitate. [3 Marks]
Aqueous phase
weak base
.CPlease clearly show electron arrow
proton acceptor
strong acid
proton donor
pushing next time,Second arrow onjugate base
vague and appears to be pointing at
the O-H bond rather than the oxygen
(-0.5)
Did not indicate which compound is
Explain why the addition of acid (3 M HCI(aq)) or base (3 M" Navi(aq)) will not separate, the neutral
compound into the aqueous layer? [1 Mark]
. Add the counter ion (Nat and CI-)
next time (not penalized as the hy-
dronium ion is used
It is assumed that a neutral compound will dissolve better in the organic layer than the aqueous solution.
Because If we add any of those solutions with, in this case Fluorene a ketone, would undergo
condensation reactions catalyzed by both, acids and bases. The neutral compound is not soluble in water,
so it remains in the organic layer.
The neutral would not react with the
acid/base. It would be because neutral
compounds dont have ionizable function-
al groups, so it cannot be deprotonat-
ed/protonated changing their solubility
(-1)...
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- Fall '09
- GOLL
- Experiment 1 Chem 266L
