Question

4. Superoxides of group 1 are represented by MO2. These are hydrolysed by water. Which is not produce in this reaction
1) MOH
2) H202
3) O2
4) H2​

Answer 1

Hydrogen is produced in this reaction. option (4) is correct.

Superoxides of group 1 are represented by MO₂. These are hydrolysed by water. which is not produce in this reaction..

1. MOH
2. H₂O₂
3. O₂
4. H₂

answer :  option (4) H₂, Hydrogen

Explanation : superoxides of group 1( alkali metals). i.e., KO₂ , RbO₂ and CsO₂. [Li and Na don't form superoxides because Li forms monoxide and  Na forms peroxide]. These all superoxides act as Bronsted base. means, they accept proton from water and gives reaction like,

2MO₂ + 2H₂O ⇒ 2MOH + H₂O₂ + O₂

Here, you see, superoxides of group 1 are hydrolysed by water and forms MOH, H₂O₂ and O₂ but not H₂.

Therefore hydrogen is produced in this reaction. option (4) is correct.

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