Demonstration pubs.acs.org/jchemeduc
Microscale Extraction of Liquid Oxygen from a Cryogenic Mixture Formed through Condensation of Ambient Air Jeffrey Statler* Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States S Supporting Information *
ABSTRACT: This demonstration extracts liquid oxygen from a cryogenic mixture collected through condensation using a small neodymium magnet. In a simple and inexpensive procedure, small amounts of liquid oxygen can be safely collected and observed. Students directly witness the collection of this cryogenic mixture over a 30 minute time period and the subsequent immediate removal of small quantities (ca.
