CALCULATING PARTITION COEFFICIENT - Organic Chemistry Lab
1. Calculate the partition coefficient of caffeine in water/methylene chloride from the following data: 10.3 g/100 mL for methylene chloride and 2.04 g/100 mL for water.
K = (10.3g/100mL) / (2.04g/100mL)
K = 5.049019608
K = 5.05
2. In a very controlled experiment (not ours), a student is sure that 0.500 grams of caffeine is dissolved in 125 mL of water. The student extracts the caffeine using a single extraction of 21 mL of methylene chloride. How much caffeine is in the methylene chloride? How much remains in the water? (use the partition coefficient calculated in #1)
I'm not sure how to set this problem up... Any help would be greatly appreciated.