19. A studen completed a very thorough extraction of an squeous soluti obecrved.

Question

19. A studen completed a very thorough extraction of an squeous soluti obecrved. Which of the folowing is (are) tre? on sing diethyl-ethe After standing for a while in a separatory funnel two distinct layers were CH A) The oepanic solwent (ether) is more dense than water B) The organic solvent (cther) is less dense than water C) Waner (the equeous layer) is the upper bayer. D) None of the above 2o. Dicyelopentadiese is the Dies- Alder addition product of two molecoles of I,3. cyclopentadiene. The structure of dicyclopentadiene is r3-cyciopentadiene IB1 IDI 21 Write the equation for the overall reaction of cyclopentadiene and maleic anhydride Your answer should clearly show the endo aad exo forms of the product 22. Using Fisher Projectice formulas draw the four siereoisomeric foms of 3-aminc-2- butanol. Using R.S notations provide complese stereochemical names for each stereoisomer.

Explanation / Answer

19 B

Ethers are non-polar and insoluble in water due to very little intermolecular association because of lack of hydrogen bonding. Hence, it is less dense than water and wil appear in a layer above water.

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