Final W09 Key


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Unformatted text preview: ound going from a solid to a gas (sublimation)? a. Rapid heating and careful monitoring b. Increase the pressure of the system c. Decrease the pressure of the system d. This compound would not be considered for sublimation e. None of the above Sublimation relies on what principle? a. That the compound does not decompose upon heating b. That the compound goes from a liquid to a gas c. That lowering the pressure increases the temperature of sublimation d. That all impurities sublime as well e. All of the above 38. What is the total % recovered after performing an extraction 2 times with equal volumes of each phase. The partition coefficient of the compound is 3. a. 3.13% b. 6.25% c. 25.0 % d. 52.3 % e. None of the above 39. How many extractions will it take to recover greater than 98% of a compound with partition coefficient of 5. You are extracting with 3 mL of ethyl acetate each time from a 5 mL volume of water. a. 1 b. 2 c. 3 d. 4 e. More than 4 Experiment 5: Photoisomerization, Thin Layer...
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This note was uploaded on 05/17/2011 for the course CHEM 6al taught by Professor Pettus during the Spring '08 term at UCSB.

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