Question

Assertion :$Br{O}_3^{-}$ shows two reactions :
$Se{O}_3^{2-}+Br{O}_3^{-}+H^{+}⟶Se{O}_4^{2-}+B{r}_2+H_{2}O$
$As{O}_2^{2-}+Br{O}_3^{-}+H^{+}⟶B{r}^{-}+As{O}_4^{-}+H_{2}O$ Reason: The ratio of equivalent masses of $Br{O}_3^{-}$ in two reactions is $\frac{5}{6}$.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

As we know, $Equivalentweight=\frac{Molarweight}{n-factor}$
Reaction:
$Se{O}_3^{2-}+Br{O}_3^{-}+H^{+}⟶Se{O}_4^{2-}+B{r}_2+H_{2}O$
+5 0
Equivalent weight of $Br{O}_3^{-}=\frac{M}{5}$
$As{O}_2^{2-}+Br{O}_3^{-}+H^{+}⟶B{r}^{-}+As{O}_4^{-}+H_{2}O$
+5 -1
Equivalent weight of $Br{O}_3^{-}=\frac{M}{6}$
So, their ratio is $\frac{6}{5}$.