Calculate in the formula from the following data: of iron(II) sulfate crystals were…

CHEMISTRY · Subjective · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

Calculate

x

in the formula

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

from the following data:

12.18\,\text{g}

of iron(II) sulfate crystals were made up to

500\,\text{cm}^3

with sulfuric acid in a volumetric flask. A

25.0\,\text{cm}^3

portion of this solution required

43.85\,\text{cm}^3

0.0100\,\text{mol dm}^{-3}

\text{KMnO}_4

for complete oxidation.