Episode 1 of 3

Scheele's Prior Production

When
1771–1772
Where
Uppsala, Sweden
Part of
Discovery of Oxygen by Joseph Priestley

Scheele produces oxygen by heating mercuric oxide and nitrates before Priestley.

Carl Wilhelm Scheele produced oxygen gas by heating mercuric oxide and various nitrates between 1771 and 1772. He described its properties but did not publish his work until 1777, after reading Priestley's 1775 publication.

Sources

  1. Oxygen Wikipedia, revision of 2026-09-21

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.