Question

Assertion: Anhydrous $Ba{O}_2$ is used for preparing $H_2{O}_2$
Reason: Hydrated $Ba{O}_2$ is not available

• A. If both assertion and reason are true and the reason is a correct explanation of the assertion
• B. If both assertion and reason are true but reason is not a correct explanation of the assertion
• C. If the assertion is true but reason is false
• D. If both the assertion and reason are false
• E. If the assertion is false but the reason is true

Answer 1

The correct option is D If both the assertion and reason are false

$H_2{O}_2$ is prepared by the action of $H_{2}S{O}_4$ on hydrated $Ba{O}_2$ and not on dehydrated $Ba{O}_2$. When dehydrated $Ba{O}_2$ is used, then a layer of $BaS{O}_4$ is formed around it which prevents reaction to proceed.
$Ba{O}_2\cdot 8H_{2}O+H_{2}S{O}_4\to BaS{O}_4+H_2{O}_2+8H_{2}O$