32g of a sample of `FeSO_(4) .7H_(2)O` were dissolved in dilute sulphuric aid and water and
Channel: Doubtnut
Date: 19/04/2020

32g of a sample of `FeSO_(4) .7H_(2)O` were dissolved in dilute sulphuric aid and water and its volue was made up to 1litre. 25mL of this solution required 20mL of `0.02 M KMnO_(4)` solution for complete oxidation. Calculate the mass% of `FeSO_(4) .7 H_(2)O` in the sample.