p-Block elementsHard

Question

Which of the following statement is false ?

Options

A.Superoxides give hydrogen peroxide and oxygen with water.
B.CrO3 is an acidic oxide.
C.SnO2 is an amphoteric oxide.
D.KO2 is peroxide which with H2O forms hydrogen peroxide only.

Solution

KO2 exists as K+ and O2-  ; so it is superoxide.
2KO2 + 2H2O → 2KOH + H2O2 + O2

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