Mickey C.

asked • 10/21/17

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.
 
MY ANSWER: 
 
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. 

1 Expert Answer

By:

Pamela L. answered • 10/21/17

Patient tutor for organic and general chemistry (all levels)

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.