Consider the balanced chemical equation for the standard laboratory titration of permanganate with o — Redox Reactions and Volumetric Analysis Chemistry Question
Question
Consider the balanced chemical equation for the standard laboratory titration of permanganate with oxalate in an acidic medium: $aMnO_4^- + bC_2O_4^{2-} + cH^+ \rightarrow xMn^{2+} + yCO_2 + zH_2O$ Which of the following statements are mathematically true regarding this stoichiometry?
💡 Solution & Explanation
The reaction relies on $C_2O_4^{2-} \rightarrow 2CO_2 + 2e^-$ (n=2) and $MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O$ (n=5). Cross-multiplying the electron transfer yields $2MnO_4^- + 5C_2O_4^{2-}$. Balancing O and H gives the final equation: $2MnO_4^- + 5C_2O_4^{2-} + 16H^+ \rightarrow 2Mn^{2+} + 10CO_2 + 8H_2O$. All statements perfectly match this.