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JAMB Chemistry 2004 Question 14

Question 14

Air

In the experiment above, X is a mixture of nitrogen, carbon (IV) oxide and

Diagram for this question
  1. A.water
  2. B.impurities
  3. C.inert gas
  4. D.oxygen
Show the answer and explanation

Answer: C (inert gas)

Explanation

Alkaline pyrogallol absorbs oxygen and anhydrous calcium chloride absorbs water vapour, so the gas leaving at X is mainly nitrogen with the inert (noble) gases.