Question

Assertion :$Mn{O}_4^{⊝}+S_2{O}_3^{2-}\underset{pH=7}{\to }Mn{O}_2+HS{O}_4^{⊝}$ Reason: The $n$ factor for $Mn{O}_4^{⊝}$ and $S_2{O}_3^{2-}$ ions respectively are $3$ and $8$.

• 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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

$3e^{-}+Mn{O}_4^{⊝}\to Mn{O}_2$
$S_2{O}_3^{2-}\to 2HS{O}_4^{⊝}+8e^{-}$
So, $n$ factor for $Mn{O}_4^{⊝}$ and $S_2{O}_3^{2-}$ ions respectively are $3$ and $8$ respectively.