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 Form 1 Chemistry Topical Questions and Answers on Air and Combustion

Explain how you would separate a mixture of nitrogen and oxygen gases given that their boiling points are #-196^0c# and #-183^0c# respectively.

 (2m 50s)
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Answer Text:
Cool the mixture to a temperature of #-200^0C# to form a liquid, then start warming. Nitrogen distils off as a gas at #-196^0C# leaving oxygen.