Chemistry - Redox Reactions Question with Solution | TestHub

${\mathrm{MnO}}_2+\mathrm{HCl}\to {\mathrm{MnCl}}_2+2{\mathrm{H}}_2\mathrm{O}+{\mathrm{Cl}}_2$

$$\begin{array}{rl}n& =2\\ {\mathrm{Cl}}_2+\mathrm{KI}& \to {\mathrm{I}}_2+\mathrm{KCl}\dots (ii)\\ n& =2\\ \therefore Eq.of{\mathrm{I}}_2& =eq.of{\mathrm{Cl}}_{2}reactedinequation(ii)\\ & =eq.of{\mathrm{Cl}}_{2}producedinequation(i)\\ & =eq.of{\mathrm{MnO}}_{2}reactedinequation(i)\\ & =2\times \frac{8.7}{87}\\ \therefore 2\times \frac{wt.of{\mathrm{I}}_2}{Molecularwt.of{\mathrm{I}}_2}& =2\times \frac{8.7}{87}\\ \therefore weightof{\mathrm{I}}_2& =25.4\mathrm{g}\end{array}$$