Q. Sodium is heated in air at $300℃$ to form $X.X$ absorbs $CO_{2}$ and forms $Na_{2}CO_{3}$ and Y? Which of the following is Y?
A) $H_{2}$
B) $O_{2}$
C) $H_{2}O_{2}$
D) $O_{3}$
Explanation
(b)
The reaction is as follows
$2Na + O_{2}\overset{\ \ \ \ \ 300℃\ \ \ \ \ }{\rightarrow}\ Na_{2}O_{2}$
sodium peroxide (X)
$2Na_{2}O_{2}\ + 2CO_{2}\ \rightarrow 2Na_{2}CO_{3} + O_{2} \uparrow$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (Y)$
Sodium peroxide is used in the purification of air in submarines because it combines with $CO_{2}\ to\ give\ O_{2}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.