Question

Equivalent mass of oxidizing agent in the reaction,
$S{O}_2+2H_{2}S\to 3S+2H_{2}O$ is:

• A. 32
• B. 64
• C. 16
• D. 8

Answer 1

The correct option is C 16

In this reaction, the oxidizing agent is $S{O}_2$. The oxidation state of sulphur is +4 which changes to 0 in the product.
Molar mass of $S{O}_2$ is 64.
The equivalent mass of $S{O}_2$ is $\frac{64}{4}=16$