Question

oxygen is a gas we breath in.it can be separated from the air.it boils at -219°C and freeze at -183°C.Name the process by which it can be separated from air​

Answer 1

Fractional distillation of liquid air. You need to be able to explain how nitrogen and oxygen are obtained from the air. You will recall that about 78% of the air is nitrogen and 21% is oxygen. These two gases can be separated by fractional distillation of liquid air.