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Questions tagged [extraction]

For questions regarding the separation process consisting in the separation of a substance from a matrix. This tag can be used for generic extraction of elements from ore or more specific types of extraction such as: liquid-liquid extraction, and solid phase extraction.

5 votes
2 answers
3k views

How to extract elemental bismuth from pepto bismol?

I was trying to isolate elemental bismuth from pepto bismol (bismuth subsalicylate) using the process seen here but after I added hydrochloric acid, instead of getting a pink foamy substance, I got a ...
johnny1bucket's user avatar
2 votes
2 answers
745 views

Can caffeine be separated from coffee?

Is there a way to extract caffeine from coffee completely?
Biju's user avatar
  • 220
3 votes
1 answer
4k views

How to extract pure caffeine from tablets?

I have some caffeine tablets and I want to extract the pure caffeine from the rest of the ingredients (caffeine 200 mg. Inactive ingredients in order are corn starch, dextrose, dicalcium phosphate, D&...
idonutunderstand's user avatar
22 votes
3 answers
3k views

67 failures at extracting acetaminophen from Excedrin(R)

I have adapted the lab experiment described in this J. Chem. Ed. article for the organic chemistry lab course I teach. In the past year, the first year of implementation, I have had 67 failures (100% ...
Ben Norris's user avatar

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