Q. Which one of the following on hydrolysis, gives the corresponding metallic hydroxide, $H_{2}O_{2}\ and\ O_{2}?$
A) $Li_{2}O\$
B) $Na_{2}O_{2}$
C) $NaO_{2}$
D) $Na_{2}O$
Explanation
(b)
$Na_{2}O_{2} + 2H_{2}O\ \ \rightarrow H_{2}O_{2} + 2NaOH\$
$\ \ \ \ \ \ \ \ \ \ \ \ 2H_{2}O_{2}\overset{\ \ \ \ \ NaOH\ \ \ \ \ }{\rightarrow}\ 2H_{2}O + O_{2}$
Water used during the reaction reacts with $Na_{2}O_{2}$ to from NaOH which tends to decompose $H_{2}O_{2}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.