Chemistry - Redox Reactions Question with Solution | TestHub

(I) $\underline{{\mathrm{P}}_2{\mathrm{H}}_4}\to {\mathrm{PH}}_3+{\mathrm{P}}_4{\mathrm{H}}_2$

${\mathrm{n}}_{\mathrm{f}}=\frac{2\times 3}{5}$ Equation wt. of ${\mathrm{P}}_2{\mathrm{O}}_4=\frac{5\mathrm{M}}{6}=\frac{6}{5}$

(II) ${\mathrm{I}}_2\to {\mathrm{I}}^{-}+{\mathrm{IO}}_3^{-}$

${\mathrm{n}}_{\mathrm{f}}=\frac{2\times 10}{12}=\frac{5}{3}$ Eq. wt. of ${\mathrm{I}}_2=\frac{3\mathrm{M}}{5}$

(III) ${\mathrm{MnO}}_4^{-}+{\mathrm{Mn}}^{2+}+{\mathrm{H}}_2\mathrm{O}\to \underline{{\mathrm{Mn}}_3{\mathrm{O}}_4}+{\mathrm{H}}^{+}$

${\mathrm{n}}_{\mathrm{f}}=\frac{13\times 2}{15}=\frac{26}{15}$

Eq. wt. of ${\mathrm{Mn}}_3{\mathrm{O}}_4=\frac{15\mathrm{M}}{26}$

(IV) $\underline{{\mathrm{H}}_3{\mathrm{PO}}_2}\to {\mathrm{PH}}_3+{\mathrm{H}}_3{\mathrm{PO}}_3$ ${\mathrm{n}}_{\mathrm{f}}=\frac{4\times 2}{6}=\frac{4}{3}$

Eq. wt. of ${\mathrm{H}}_3{\mathrm{PO}}_2=\frac{3\mathrm{M}}{4}$