mole of is oxidized by moles of in acidic medium. is: — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

$SO_3^{2-} \rightarrow SO_4^{2-}$ ($+4$ to $+6$, $n=2$). <br>$MnO_4^- \rightarrow Mn^{2+}$ ($n=5$). <br>Equivalents: $1 \times 2 = x \times 5 \Rightarrow x = 2/5$.