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Q. To balance the following reaction,
$2 Mn ^{2+}+A S _{2} O _{8}^{2-}+B H _{2} O \longrightarrow 2 MnO _{4}^{-}+C SO _{4}^{2-}+D H ^{+}$
stoichiometric coefficients $A, B, C$ and $D$ have been used. What would be the exact value of these coefficients?

The d-and f-Block Elements

Solution:

$2 Mn ^{2+}+5 S _{2} O _{8}^{2-}+8 H _{2} O \longrightarrow 2 MnO _{4}^{-}+10 SO _{4}^{2-}+16 H ^{+}$