Ko/d = (org layer)/(aq layer)
K = 3.5
Let x = wt in aq layer
Then 10-x = wt in org layer
3.5 = (10-x)/(100)/(x/60)
Solve for x
Do that three times for 3 extractions.
The distribution coefficient between ether and water for aspirin at room temperature is 3.5. What weight of aspirin would be extracted by a single extraction with 60 ml of water from a solution of 10 grams of aspirin in 100 ml of ether? Calculate the weight of aspirin which would be removed by three extractions with 20 ml portions of water.
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