$\mathrm{MnO}_{4}^{-}+\mathrm{C}_{2} \mathrm{O}_{4}^{2-}+\mathrm{H}^{+} \longrightarrow \mathrm{Mn}^{2+}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}$
સંતુલિત સમીકરણ માટે પ્રક્રિયકોના સાચા ગુણાંકો જણાવો.
$\mathrm{MnO}_{4}^{-} \quad \mathrm{C}_{2} \mathrm{O}_{4}^{2-}\quad \mathrm{H}^{+}$
$C_2O_4^{-2}\rightarrow CO_2\; 2e^-\; loss\dots(2)$
multiplying $( 1 )$ by $2$ and $( 2 )$ by $5$ to balance $e^-$
$2 \mathrm{MnO}_{4}^{-}+5 \mathrm{C}_{2} \mathrm{O}_{4}^{-2} \longrightarrow 2 \mathrm{Mn}^{+2}+10 \mathrm{CO}_{2}$
on balancing charge;
$2 \mathrm{MnO}_{4}^{-}+5 \mathrm{C}_{2} \mathrm{O}_{4}^{-2}+16 \mathrm{H}^{+} \longrightarrow 2 \mathrm{Mn}^{+2}+10 \mathrm{CO}_{2}+8 \mathrm{H}_{2} \mathrm{O}$
$C + {O_2} \to C{O_2};\Delta H = - 393\,J$
$2Zn + {O_2} \to 2ZnO;\Delta H = - 412\,J$
$4Fe + 3{O_2}\, \to \,4F{e^{3 + }} + 6{O^{2 - }}$
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