We are keeping apart anthracene from benzoic acid via an extraction between ethyl acetate and a simple aqueous solution in a separatory funnel. acquire the top layer, dry it with Na2SO4, and evaporate the solvent.
In view that benzoic acid is almost completely insoluble in water, it will form a precipitate (that is recrystallization). we can then isolate the benzoic acid with the use of vacuum filtration in a Büchner funnel.
Including NaOH will neutralize the benzoic acid generating the benzoate ion, which now is going into the aqueous layer, leaving other different two natural compounds inside the ether.
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