25 g of a sample of ferrous sulphate was dissolved in water containing dilute H_(2)SO_(4) and the volume made up to one litre. 25 mL of this solution required 20 mL of N//10 KMnO_(4) solution for complete oxidation. Calculate the percentage of FeSO_(4). 7H_(2)O in the sample.

25 g of a sample of ferrous sulphate was dissolved in water containing

1.	25 g of a sample of ferrous sulphate was dissolved in water containing dilute H_(2)SO_(4) and the volume made up to one litre. 25 mL of this solution required 20 mL of N//10 KMnO_(4) solution for complete oxidation. Calculate the percentage of FeSO_(4). 7H_(2)O in the sample.
Answer» SOLUTION :N//A