Q.

Which of the following liberates O2 upon hydrolysis

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a

Pb3O4

b

KO2

c

Na2O2

d

Li2O2

answer is B.

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Detailed Solution

(a) Pb3O4 is insoluble in water or do not react with water. (b) 2KO2+2H2O→2KOH+H2O2+O2(g)↑( c ) Na2O2+2H2O→2NaOH+H2O2(d) Li2O2+2H2O→2LiOH+H2O2
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