Question

Which one of the following oxides is not acidic? (a) CO (b) CO2 (c) SO2 (d) SO3

Answer 1

Answer:

co is a oxide is not acidic

Explanation:

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Answer 2

CO is not an acidic oxide.

Answer: Option (a)

Explanation:

An ‘acidic oxide’ is a compound of Oxygen which when reacted with water yields an acid.

$\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}=\mathrm{H}_{2} \mathrm{CO}_{3}$

Carbon dioxide yields carbonic acid when reacted with water. Hence it is an acidic oxide.

$\mathrm{SO}_{2}+\mathrm{H}_{2} \mathrm{O}=\mathrm{H}_{2} \mathrm{SO}_{3}$

Sulphur dioxide yields Sulphurous acid when reacted with water. Hence it is an acidic oxide.

$\mathrm{SO}_{3}+\mathrm{H}_{2} \mathrm{O}=\mathrm{H}_{2} \mathrm{SO}_{4}$

Sulphur trioxide yields Sulphuric acid when reacted with water. Hence it is an acidic oxide.

$\mathrm{CO}+\mathrm{H}_{2} \mathrm{O}=\mathrm{CO}_{2}+\mathrm{H}_{2}$

Carbon monoxide reacts with water vapour to yield carbon dioxide and hydrogen. No acid is produced. Hence it is not an acidic oxide.