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

Chemistry

JAMB 2005

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

A. passed over heated copper (II) oxide
B. bubbled through water
C. bubbled through concentrated tetroxosulphate (VI) acid
D. bubbled through sodium hydroxide

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Correct Answer: Option D

Explanation

Carbon(II) oxide is prepared from Carbon(IV) oxide by passing CO\(_2\) through red-hot carbon. Most of the CO\(_2\) becomes reduced to CO. However, the uncharged CO\(_2\) is removed by passing the mixture through concentrated NaOH, in order to collect the pure CO over water.

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