I have a lab for organic chemistry that I need help answering questions. I dont have the data anymore so youll have to use online sources for data. Please type answersQuestions for Extraction of Caffeine from Tea Lab
1.
How much caffeine have you isolated? How does that compare to the 30 to 75 mg of
caffeine reported in the literature for each cup of tea?
2. What does the addition of Na2CO3 do to aid in the extraction of caffeine?
3.
Caffeine can also be extracted with 1-propanol (CH3-CH2-CH2-OH) instead of methylene
chloride. The extraction is not as effective if you use the same amounts. Why might that
be the case? (Draw the structures and give intermolecular reasons if need be.)
4. Why is the caffeine you extracted not have the same melting point as pure caffeine?
What other chemicals might be found as impurities? (Use the internet to find other
caffeine extraction labs to answer this question.)
5. What other procedures could be used to purify or check the purity of caffeine? (Internet
search)

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