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Unformatted text preview: 2. 2. Assuming caffeine has a solubility of 64 g in 100 mL of dichloromethane and a solubility of 4.0 g in 100 mL of water, a. What is the partition coefficient for the extraction of caffeine in a dichloromethane water solvent system? Show your work. b. How much caffeine is obtained if a solution containing 5.0 g of caffeine in 100 mL of water was extracted once with 100 mL of dichloromethane? Show your work. c. How much caffeine is obtained if a solution containing 5.0 g of caffeine in 100 mL of water was extracted twice with 50 mL of dichloromethane each time? Show your work. 3. A) = Partition Coefficient = Phase 2Phase 1 64 g100 mL 4 g100 = mL 16 g B) = q + = + = . = . V1V1 KV2n 100100 161001 0 05885g 0 294 g C) = q + = + = . = . V1V1 KV2n 5050 161001 0 00355g 0 0046 g...
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This note was uploaded on 05/20/2011 for the course CHEM 262 taught by Professor Forbes during the Spring '08 term at UNC.
- Spring '08
- Organic chemistry