19. A student completed a very thorough extraction of an aqueous solution using

Question

19. A student completed a very thorough extraction of an aqueous solution using diethyl-ether (CH,CH-O-CH,CH). After standing for a while in a separatory funnel two distinct layers were observed. Which of the following is (are) true? )The organic solvent (ether) is more dense than water The organic solvent (ether) is less dense than water ) Water (the aqueous layer) is the upper layer D) None of the above 20. Dicyclopentadiene is the Diels-Alder addition product of two molecules of 1,3 cyclopentadiene. The structure of dicyclopentadiene is 1,3-c) 1B] ID) 21. Write the equation for the overall reaction of cyclopentadiene and maleic anhydride Your answer should clearly show the endo and exo forms of the product. endo 22. Using Fisher Projection formulas draw the four stereoisomeric forms of 3-amino-2- butanol Using R.S notations provide complete stereochemical names for each stereoisomer.

Explanation / Answer

Ethyl acetate has a density of 0.78 g/mL approx, whereas water has a density of 1 g/mL

therefore

ethyl acetate must go on top due to lower density, and water must go down, due to higher density.

From th elist, choose B, the ether will be less dense than water

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