(i) 25 g of a sample of FeSO2 was dissolved in water containing del. H2SO4 and volume made upto 1 liters.25 ml of this solution required 20 ml of N/10 KmnO3 for complete Oxidation. Calculate % of FesO4.7H2O in given sample.
(ii) A solution of 0.1 m KMnO4 is used for the reaction
S2O32- + 2MnO4- + H2O → MnO3 + SO22- + OH-
What Volume of solution in ml will be required to react with 0.158 gm of Na2S2O3?