Chemistry - Complete d-block Question with Solution | TestHub

Potassium dichromate oxidises ferrous oxalate in acidic medium as follow, $2{\mathrm{FeC}}_2{\mathrm{O}}_4+{\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}+14{\mathrm{H}}^{+}⟶2{\mathrm{Fe}}^{3+}+2{\mathrm{Cr}}^{3+}+4{\mathrm{CO}}_2+7{\mathrm{H}}_2\mathrm{O}$ Since, 2 moles of ${\mathrm{FeC}}_2{\mathrm{O}}_4$ are oxidised by 1 mole of ${\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}$ therefore, 1 mole of ${\mathrm{FeC}}_2{\mathrm{O}}_4$ will be oxidised by 0.5 mole of ${\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}$.