Chemistry - Redox Reactions Question with Solution | TestHub

0.5 g mixture of ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ and ${\mathrm{KMnO}}_4$ was treated with excess of KI in acidic medium. Iodine so liberated required 100 ml of 0.15 N solution of sodium thiosulphate for titration. The percentage of ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ in the mixture is?

(Molecular weight of K₂Cr₂O₇ = 294 gm/mol and KMnO₄ = 158 gm/mol)