Question

Milliequivalents of $Se{O}_3^{2-}$ is :

• A. $\frac{55}{72}$
• B. $\frac{55}{36}$
• C. $\frac{11}{36}$
• D. $\frac{11}{6}$

Answer 1

The correct option is B $\frac{55}{36}$

Millimoles of $Br{O}_3^{⊝}$ that reacted with $Se{O}_3^{2-}$ in equation (i)

$=\frac{11}{36}$ mmol of $Br{O}_3^{⊝}$

$=\frac{11}{36}\times 5$ ( $n$-factor $Br{O}_3^{⊝}$ in equation (i))

$=\frac{55}{36}$ mEq. of $Br{O}_3^{⊝}\equiv$ mEq. of $Se{O}_3^{2-}$ reacted