આણ્વિય દળ ${K}=39, {Mn}=55, {O}=16]$
\({KMnO}_{4}+{FeSO}_{4} \rightarrow {Fe}_{2}\left({SO}_{4}\right)_{3}+{Mn}^{2+}\)
\({n}=5 \quad {n}=1\)
(Equivalents of \({KMnO}_{4}\) reacted \()=\) (Equivalents of \({FeSO}_{4}\) reacted \()\)
\(\Rightarrow(5 \times x \times 10\, {ml})=1 \times 0.1 \times 10\, {ml}\)
\(\Rightarrow {x}=0.02\, {M}\)
Molar mass of \({KMnO}_{4}=158\, {gm} / {mol}\)
\(\Rightarrow \text { Strength }=({x} \times 158)=3.16\, {~g} / \ell\)
$(K_f =-1.86\,^o\, C/m)$
($CHCl_3$ નુ મોલર દળ $= 35.5\, g\, mol^{-1}$ )