What volume of `0.2` M `K_2Cr_2O_7` is required to oxidise 50 " mL of " `0.3 M` `Na_2C_2O_4` in acidic medium?

What volume of 0.1 M K_2Cr_2O_7 is required to oxidise 50 " mL of " 0.2 M Cu_2S (cuprous sulphide) in acidic medium to give Cr^(3+),Cr^(2+) , and SO_2(g) ?

What volume of 0.1 M K_2Cr_2O_7 is required to oxidise 50 " mL of " 0.2 M Cu_2S (cuprous sulphide) in acidic medium to give Cr^(3+),Cr^(2+) , and SO_2(g) ?

What volume of 0.1 M KMnO_4 is required to oxidise 100 " mL of " 0.2 M FeSO_4 in acidic medium ? The reaction involved is

What volume of 01 M KMnO_4 is required to oxidise 100 " mL of " 0.2 M FeSO_4 in acidic medium ? The reaction involved is

What volume of 0.1 M KMnO_4 is required to oxidise 100 " mL of " 0.3 FeC_2O_4 (ferrous oxalate) in acidic medium?

Volume of 0.1 M K_2Cr_2O_7 required to oxidize 35 ml of 0.5 M FeSO_4 solution is

Volume of 0.1 M K_2Cr_2O_7 required to oxidize 35 ml of 0.5 M FeSO_4 solution is