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  4. A metallic oxide reacts with water to form its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be

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Q. A metallic oxide reacts with water to form its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be

KCETKCET 2014The s-Block Elements

Solution:

Potassium superoxide reacts with water as follows

$2KO_2 + 2H_2O \to 2KOH + H_2O_2 + O_2$