Some Basic Concepts of Chemistry - Result Question 18

Answer:

Correct Answer: 18. (b)

Solution:

The balanced redox reaction is :

$\begin{aligned} & 3 \mathrm{MnO}_4^{-}+5 \mathrm{FeC}_2 \mathrm{O}_4+24 \mathrm{H}^{+} \longrightarrow 3 \mathrm{Mn}^{2+}+5 \mathrm{Fe}^{3+} \ &+ 10 \mathrm{CO}_2+12 \mathrm{H}_2 \mathrm{O} \end{aligned}$

$\because 5$ moles of $\mathrm{FeC}_2 \mathrm{O}_4$ require 3 moles of $\mathrm{KMnO}_4$

$\therefore 1$ mole of $\mathrm{FeC}_2 \mathrm{O}_4$ will require $\frac{3}{5}$ mole of $\mathrm{KMnO}_4$.