Which of the following correctly matches the reactant to its n-factor for the specified complete rea — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

All are correct. $Cu_2S$: Cu (+1 to +2, total 2) + S (-2 to +4, total 6) = 8. $FeC_2O_4$: Fe (+2 to +3, total 1) + C (+3 to +4, total 2) = 3. $K_2Cr_2O_7$: Cr (+6 to +3, total 6). $KMnO_4$ in strong base reduces to Manganate (+7 to +6), n=1.