The equivalent weight of {S_2O_3^{2-}} in the | vedclass

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(A) In the given reaction: ${2S_2O_3^{2-} + I_2 \rightarrow S_4O_6^{2-} + 2I^-}$.First,determine the change in oxidation state of sulfur.In ${S_2O_3^{

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(Molecular weight) $/ 1$

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(A) In the given reaction: ${2S_2O_3^{2-} + I_2 ightarrow S_4O_6^{2-} + 2I^-}$.First,determine the change in oxidation state of sulfur.In ${S_2O_3^{2-}}$,the average oxidation state of $S$ is $+2$.In ${S_4O_6^{2-}}$,the average oxidation state of $S$ is $+2.5$.The change in oxidation state per sulfur atom is ${2.5 - 2 = 0.5}$.Since there are $2$ sulfur atoms in ${S_2O_3^{2-}}$,the total change in oxidation state per molecule of ${S_2O_3^{2-}}$ is ${2 	imes 0.5 = 1}$.Therefore,the n-factor for ${S_2O_3^{2-}}$ is $1$.The equivalent weight is defined as $\frac{	ext{Molecular weight}}{	ext{n-factor}}$.Thus,the equivalent weight is $\frac{	ext{Molecular weight}}{1}$.

The equivalent weight of ${S_2O_3^{2-}}$ in the reaction where it acts as a reductant is ...... . ${2S_2O_3^{2-} + I_2 \rightarrow S_4O_6^{2-} + 2I^-}$

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