1. You are separating anthracene from benzoic acid via an extraction between eth

Question

1.         You are separating anthracene from benzoic acid via an extraction between ethyl acetate and a basic aqueous solution in a separatory funnel. How would you recover the anthracene? (2 pt)

A.

Collect the bottom layer, dry with Na2SO4, and evaporate the solvent.

B.

Collect the top layer, dry with Na2SO4, and evaporate the solvent.

C.

Collect the bottom layer and add HCl to precipitate the compound.

D.

Collect the top layer and add HCl to precitipate the compound.

E.

Collect the bottom layer and add NaOH to precipitate the compound.

F.

Collect the top layer and add NaOH to precipitate the compound.

A.

Collect the bottom layer, dry with Na2SO4, and evaporate the solvent.

B.

Collect the top layer, dry with Na2SO4, and evaporate the solvent.

C.

Collect the bottom layer and add HCl to precipitate the compound.

D.

Collect the top layer and add HCl to precitipate the compound.

E.

Collect the bottom layer and add NaOH to precipitate the compound.

F.

Collect the top layer and add NaOH to precipitate the compound.

Explanation / Answer

B. Collect the top layer, dry with Na2SO4, and evaporate the solvent.

Anthracene is soluble in ethyl acetate and benzoic acid is soluble in basic aqueous solution.
The density of ethyl acetate is lower than the density of basic aqueous solution. Hence, anthracene will be present in top layer.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.