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JAMB Chemistry 1993 Question 33

Question 33

Carbon and its Compounds

An experiment produces a gaseous mixture of carbon (IV) oxide and carbon (II) oxide. In order to obtain pure carbon (II) oxide, the gas mixture should be

  1. A.passed over heated copper (II) oxide
  2. B.bubbled through concentrated tetraoxosulphate (VI) acid
  3. C.bubbled through sodium hydroxide solution
  4. D.bubbled through water
Show the answer and explanation

Answer: C (bubbled through sodium hydroxide solution)

Explanation

Sodium hydroxide absorbs the acidic CO2 but not the neutral CO, so the gas that passes through is CO.