Where did Joseph Priestley capture fixed air (CO2) around 1767?
Answer
A beer vat at the Stone Brewery in Leeds
Joseph Priestley achieved his critical breakthrough concerning fixed air in Leeds, England, around 1767. Specifically, he suspended a bowl of water over a beer vat where fermentation was occurring. The fermenting beer naturally released carbon dioxide, which rose and was captured by the water in the bowl. This captured gas was then used by Priestley to artificially infuse ordinary water, providing the foundational method for carbonation.

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