Question

The oxidation state of oxygen of $H_2{O}_2$ in the final products when it reacts with $A{s}_2{O}_3$ is :

• A. $0$
• B. $1$
• C. $-1$
• D. $-2$

Answer 1

The correct option is D $-2$

As the reaction between $A{s}_2{O}_3$ and $H_2{O}_2$ is as follows:

$A{s}_2{O}_3+3H_2{O}_2\to 3H_{2}O+2As$

So here, the final product is $H_{2}O$, where O has Oxidation state to be -2.