Conclusion

Congratulations! You finished the Thin-Layer Chromatography experiment.

Based on your four plates and the information in the following table from in the lab textbook, which painkiller do you think your unknown was?

A table from the lab textbook showing the active ingredients and common names of Tylenol, aspirin, Excedrin, and ibuprofen. Tylenol's active ingredient is 4-acetamidophenol and its common name is acetaminophen. Aspirin's active ingredient is acetylsalicylic acid and its common name is aspirin. Excedrin's active ingredients are acetylsalicylic acid, 4-acetamidophenol, and caffeine, and the common names of its active ingredients are aspirin, acetaminophen, and caffeine. Ibuprofen's active ingredient is 2-(4-isobutylphenyl)propanoic acid, and its common name is ibuprofen.

Remember to fill out your post-lab worksheet and go back to fill in any important observations you may have missed the first time around.

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