1. What is the purpose of adding Na2SO4 to the dichloromethane layer prior to distillation 2. Explain why salt was added to the water before the liquid-liquid extraction of caffeine. What is going on, why is it occurring, and how is it happening? 3. Why was the liquid-liquid extraction of caffeine done three times instead of a single- step extraction? please explain in detail. thanks.

1. What is the purpose of adding Na2SO4 to the dichloromethane layer prior to distillation 2. Explain why salt was added to the water before the liquid-liquid extraction of caffeine. What is going on, why is it occurring, and how is it happening? 3. Why was the liquid-liquid extraction of caffeine done three times instead of a single- step extraction? please explain in detail. thanks.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

1. What is the purpose of adding Na2SO4 to
the dichloromethane layer prior to distillation
2. Explain why salt was added to the water
before the liquid-liquid extraction of caffeine.
What is going on, why is it occurring, and
how is it happening?
3. Why was the liquid-liquid extraction of
caffeine done three times instead of a single-
step extraction?
please explain in detail. thanks.

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