Question

6) Compound Y has a distribution coefficient of 4.0 when extracted from water with chloroform, with Y being more soluble in chloroform. How many 10.0 mL chloroform extractions would be required to extract at least 90% of Y from a 50.0 mL aqueous solution of water? 4 points Calculations Answer

Answer 1

Answer 8- Page No-0 (6) Given, Compound y has a distribution Co-Efficient, - 40, For series of n- extractions, the fractions of analyte remaining in the aqueous phase, after last extraction is given by, levorg + log / Voor = 50.0 ml oqerous solution of watu. Vore - 10.0 me choroform extractions Corganic phase) o= Distribution Co-Efficient = 4.0 To detumine number of extractions for an Efficiency of 90% we set (Qoog Dn = 100-90 100 0.1er 500 mL (4.0) (10.0 m2) + ( 50.0 mc) 0.1-07-C0-555) ? 0.1 = (0:5550"

Page No- 10.1) - (O.SSSS)" ...n log cool) log lossss) -La -0.2553 n= 3.916 ~ 4 Extractions are necessary i. Minimum extract 90% of 4 of Y, to