mole of is oxidized by moles of in acidic medium. is: — Redox Reactions and Volumetric Analysis Chemistry Question
Question
$1$ mole of $SO_3^{2-}$ is oxidized by $x$ moles of $MnO_4^-$ in acidic medium. $x$ is:
Answer: A
💡 Solution & Explanation
$SO_3^{2-} \rightarrow SO_4^{2-}$ ($+4$ to $+6$, $n=2$). <br>$MnO_4^- \rightarrow Mn^{2+}$ ($n=5$). <br>Equivalents: $1 \times 2 = x \times 5 \Rightarrow x = 2/5$.
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