After the liquid-liquid extraction of caffeine, you are removing the dichloromethane solvent on the rotary evaporator. After 30 mins the solvent volume has not decreased. This may be because: a. You have the aqueous layer on the rotary evaporator and are trying to remove water, instead of the organic layer b. You picked up the wrong solvent bottle, and this isn’t dichloromethane c. It typically takes 30 mins to remove the low-boiling dichloromethane solvent on a rotary evaporator d. You forget to close the vent on the rotary evaporator e. Either a), b), or d).
After the liquid-liquid extraction of caffeine, you are removing the dichloromethane solvent on the rotary evaporator. After 30 mins the solvent volume has not decreased. This may be because: a. You have the aqueous layer on the rotary evaporator and are trying to remove water, instead of the organic layer b. You picked up the wrong solvent bottle, and this isn’t dichloromethane c. It typically takes 30 mins to remove the low-boiling dichloromethane solvent on a rotary evaporator d. You forget to close the vent on the rotary evaporator e. Either a), b), or d).
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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After the liquid-liquid extraction of caffeine, you are removing the dichloromethane solvent on the rotary evaporator. After 30 mins the solvent volume has not decreased. This may be because:
a. You have the aqueous layer on the rotary evaporator and are trying to remove water, instead of the organic layer
b. You picked up the wrong solvent bottle, and this isn’t dichloromethane
c. It typically takes 30 mins to remove the low-boiling dichloromethane solvent on a rotary evaporator
d. You forget to close the vent on the rotary evaporator
e. Either a), b), or d).
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