Resumen de Microscale Demonstration of the Paramagnetism of Liquid Oxygen with a Neodymium Magnet.
When a neodymium magnet is brought near a suspended small glass tube (2.5 mL) containing 2 mmol (64 mg) liquid oxygen, the tube is attracted to the magnet demonstrating oxygen's paramagnetism. Larger quantities of liquid oxygen can be produced in a similar fashion using a food storage bag filled with oxygen in place of a 60 mL syringe used to condense 2 mmol oxygen. On the larger scale, the blue color of liquid oxygen is readily observable by students.
