Chemistry - Redox Reactions Question with Solution | TestHub

${\text{M}}^{\text{x}+}\to {\left[\stackrel{+5}{\text{M}}{\text{O}}_3\right]}^{-1}+\left(5-\text{x}\right){\text{e}}^{-}$(OHR)

${\left[\stackrel{+7}{\text{Mn}}{\text{O}}_4\right]}^{-1}+5\overline{\text{e}}\to {\text{Mn}}^{2+}$(RHR)

Equivalent of${\text{MnO}}_4^{-}\equiv$Equivalents of M^x+

1 mole x 5 = 1.67 mole (5 - x)

$5=\frac{5}{3}\left(5-\text{x}\right) \Rightarrow \mathrm{ 3}=5-\text{x}$

$\therefore \text{x}=2$.