Question

What (what gas) is used to remove caffeine

from coffee?​

Answer 1

Answer:

Co2

Explanation:

Answer 2

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Supercritical CO2 has been used in industry to extract caffeine from coffee beans since the 1970s. Caffeine has a low solubility in supercritical carbon dioxide and, for this reason, a co-solvent (either water or ethanol) is used which triples the caffeine solubility, hence accelerating the extraction.

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