The principle source of oxygen in industry today is:
thermal dissociation of dinitrogen tetraoxide
electrolysis of nitric acid
reduction of nitrous oxide
fractional distillation of liquid air
A
fractional distillation of liquid air
B
thermal dissociation of dinitrogen tetraoxide
C
electrolysis of nitric acid
D
reduction of nitrous oxide
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Solution
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The principle source of oxygen in industry today is fractional distillation of liquid air. In this commercial method, air is liquefied by using Joule-Thomson
effect. Water vapour and carbon dioxide are removed by solidification.
Liquid oxygen ( boiling point −183oC) is
separated from liquid nitrogen ( boiling point −195.8oC) by fractional distillation.
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