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JAMB Chemistry 2005 Question 50

Question 50

Carbon and its Compounds

To obtain pure carbon (II) oxide from its mixture with carbon (IV) oxide, the mixture should be

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

Answer: D (bubbled through sodium hydroxide)

Explanation

Sodium hydroxide absorbs the acidic CO2 (forming Na2CO3) while the neutral CO passes through unchanged.