Question

The number of moles of KMnO4 that will be needed to react completely with one mole of ferrous oxalate in acidic solution is :

• A. 3/5
• B. 2/5
• C. 4/5
• D. 1

Answer 1

Answer: (A)

3/5

Answer 2

(1)

6KMnO4 + 10FeC2O4 + 24H2SO4$\longrightarrow$ 3K2SO4 + 6MnSO4 + 5Fe2(SO4)3 + 20CO2 + 24H2O.

$\therefore\frac{3}{5}$ mole of KMnO4 for one mole ferrous oxalate.