What is the most common and least expensive method for commercial production of O2?

	Electrolysis of water
	Fractional distillation of air
	Chemical decomposition of sodium chlorate
	Physical separation by molecular sieves

Expert Solution

The most commonest way for production of commericial oxygen is fractional distillation of air ( Fractional distillation uses the different boiling points of the main elements of air. As the liquid air is heated, the elements change from liquid to gas and separate from one another), because

production of 02 using electrolyis of water requires huge electricity and expensive electrodes

chemical decomposition of chlorate is also expensice and it is used in emegengy oxygen in aircraft it is generates very pure oxygen

Nightingale answered 2 years ago

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