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In the usual laboratory experiment, the tea extract is being washed with three separate portions of 10 mL of CH2Cl2 instead of 30 mL at once? What do you think is the reason for this? Use the concept of the distribution coefficient, Kd, to support your claim. Assume that the Kd for caffeine in a water/dichloromethane system is 7.8.

In the usual laboratory experiment, the tea extract is being washed with three separate portions of 10 mL of CH2Cl2 instead of 30 mL at once? What do you think is the reason for this? Use the concept of the distribution coefficient, Kd, to support your claim. Assume that the Kd for caffeine in a water/dichloromethane system is 7.8.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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In the usual laboratory experiment, the tea extract is being washed with three separate portions of 10 mL of CH2Cl2 instead of 30 mL at once? What do you think is the reason for this? Use the concept of the distribution coefficient, Kd, to support your claim. Assume that the Kd for caffeine in a water/dichloromethane system is 7.8. 

 

TOPIC : Liquid-Liquid Extraction

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