Chemistry - Mole Concept Question with Solution | TestHub

0.36 g of iron pyrites is heated strongly in air. The ${\mathrm{SO}}_2$ produced is passed through acidified decimolar ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$. The volume of acidified ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ solution used in redox titration is (atomic masses: $\mathrm{S}=32,\mathrm{Fe}=56$ )