1.

Which of the following liberates O2 upon hydrolysis?(A) Pb3O4 (B) KO2 (C) Na2O2 (D) Li2O2

Answer»

(B) KO2

(A) Pb3O4 is insoluble in water or do not react with water. 

(B) 2KO2 + 2H2O \(\rightarrow\) 2KOH + H2O2 + O2(g) \(\uparrow\) 

(C) Na2O2 + 2H2O \(\rightarrow\) 2NaOH + H2O

(D) Li2O2 + 2H2O \(\rightarrow\) 2LiOH + H2O2



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