Where is oxygen produced by fractional distillation found?

Oxygen produced by fractional distillation is indeed found in compressed cylinders or as liquid oxygen. Fractional distillation is a process that separates gases based on their boiling points. In the case of oxygen, air is cooled and liquefied, and then its components are separated by slowly heating the liquid air, allowing the more readily vaporized gases to be collected at various stages.

When oxygen is separated in this manner, it can be stored either in high-pressure cylinders as a gas or as a cryogenic liquid, which is useful for various medical and industrial applications due to its compactness and ease of transport. The other scenarios mentioned do not represent standard methods for producing pure oxygen; for example, home concentrators generate oxygen through different means, such as using molecular sieve technology, which differs from the process of fractional distillation. Similarly, nitrogen tanks and Heliox mixtures do not produce or contain pure oxygen produced via this method.