Q. Hydrogen peroxide is prepared in the laboratory by
A) Passing $CO_{2}$ into $BaO_{2}$
B) Adding $MnO_{2}$ to dil. $H_{2}SO_{4}$
C) Adding $Na_{2}O_{2}$ to cold water
D) Adding $PbO_{2}$ into $KMnO_{4}$
Explanation
(a)
Hydrogen peroxide is prepared by the action of $CO_{2}$ on barium peroxide peroxide $\left( BaO_{2} \right).$
$BaO_{2} + \ CO_{2} + \ H_{2}O\ \ \rightarrow \ \ \ \ BaCO_{3}\ \ \ \ \ + \ H_{2}O_{2}$
barium barium hydrogen
peroxide carbonate peroxide
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.