5 g mixture and is completely oxidised by 5.5 mL of 0.1 M in acid medium

CHEMISTRY · Single correct · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

5 g mixture

\text{FeSO}_4 \cdot 7\text{H}_2\text{O}

and

\text{Fe}_2(\text{SO}_4)_3 \cdot 9\text{H}_2\text{O}

is completely oxidised by 5.5 mL of 0.1 M

\text{KMnO}_4

in acid medium. The % of

\text{FeSO}_4 \cdot 7\text{H}_2\text{O}

in mixture is: (1) 15.29 (2) 3.058 (3) 20.24 (4) 25.29