Question

If the equivalent weight of $S$ in $S{O}_2$ is $8$, then the equivalent weight of $S$ in $S{O}_3$ is :

• A. $\frac{8\times 2}{3}$
• B. $\frac{8\times 3}{2}$
• C. $8\times 2\times 3$
• D. $\frac{2\times 3}{8}$

Answer 1

The correct option is A $\frac{8\times 2}{3}$

The atomic mass of S is 32.

$\text{Equivalent mass}=\frac{\text{Atomic mass}}{\text{valency}}$

If the equivalent weight of $S$ in $S{O}_2$ is 8, then the valency of S is $\frac{32}{4}=2$.

The equivalent weight of $S$ in $S{O}_3$ is $\frac{32}{6}$ or $\frac{8\times 2}{3}$ as the valency of S is 6.