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Nitrogen obtained from the liquefaction of air has a higher density than that obtained from...

Chemistry
JAMB 1999

Nitrogen obtained from the liquefaction of air has a higher density than that obtained from nitrogen containing compounds because the former contains

  • A. water vapour
  • B. oxygen
  • C. carbon (IV) oxide
  • D. rare gases
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Correct Answer: Option D
Explanation

The correct answer is rare gases because when nitrogen is obtained from air, \(CO_2\) and \(O_2\) are removed by passing air through caustic soda and heated copper turnings respectively.
However, the nitrogen obtained this way contains about 1% by volume of rare gases as impurities, these rare gases make it denser than nitrogen obtained from nitrogen compounds like ammonia, etc


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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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