**(A):** In acidic medium, is a more powerful oxidizing agent than in neutral medium. <br> **(R):** — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Assertion:** $E^o$ for $MnO_4^-/Mn^{2+}$ (+1.51V) is higher than for $MnO_4^-/MnO_2$ (+1.23V). True. <br>**Reason:** According to Nernst equation for $MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O$, $E$ increases as $[H^+]$ increases. True and explains why it's stronger in acid.