Experiment 3: Extraction and Isolation of Caffeine from Tea Bags
Name:
Pre-Lab Questions:
1. What consequences would result from not allowing the tea solution to fully cool
before extracting with dichloromethane? How would this affect the percent
recovery? (4 pts.)
2. Why is it important to make sure that the separatory funnel is vented? (2 pts.)
3. If a student isolated 12 mg of caffeine after recrystallization, calculate the Percent
Recovery. Include the appropriate equation and show your work for full credit. (4
pts.)