Q10 / 160 · TS EAMCET 2022 (19 Jul Shift 2) · Chemistry

The number of moles of ferrous oxalate oxidised by one mole of $\mathrm{KMnO}_4$ in acidic medium is

  • A
    $\frac{5}{2}$
  • B
    $\frac{2}{5}$
  • C
    $\frac{3}{5}$
  • Correct answer
    D
    $\frac{5}{3}$

Solution

The reaction between potassium permanganate and ferrous oxalate is: $3 \mathrm{MnO}_4^{-}+5 \mathrm{FeC}_2 \mathrm{O}_4+24 \mathrm{H}^{+} \rightarrow 3 \mathrm{Mn}^{2+}+5 \mathrm{Fe}^{3+} +10 \mathrm{CO}_2+12 \mathrm{H}_2 \mathrm{O}$ $1 \mathrm{~mol}$ of $\mathrm{MnO}_4^{-}=5 \mathrm{~mol}$ of $\mathrm{FeC}_2 \mathrm{O}_4$ $3 \mathrm{~mol} \text { of } \mathrm{MnO}_4^{-}=\frac{5}{3} \mathrm{~mol} \text { of } \mathrm{FeC}_2 \mathrm{O}_4 \text {. }$

Hence, the correct answer is option: 'D'.

More Redox Reactions Questions