In the following
$2 C u^{2 +} + 4 I^{-} ⟶ C u_{2} I_{2} + I_{2}$
$2 S_{2} O_{3}^{2 -} + I_{2} ⟶ S_{4} O_{5}^{2 -} + 2 I^{-}$
Calculate the equivalent mass of $C u^{2 +}$ .

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Solution

$2 C u^{2 +} + 4 I^{-} ⟶ C u_{2} I_{2} + I_{2}$ --------(1)
$2 S_{2} O_{3}^{2 -} + I_{2} ⟶ S_{4} O_{5}^{2 -} + 2 I^{-}$ -----------(2)
In the above reaction no 1 we can see that stoichiometric coefficient of cu is 2 as well as valency is also 2
Equivalent mass = $\frac{s t o i c h i o m e t r i c c o e f f i c i e n t \times M o l e c u l a r m a s s}{v a l e n c y}$
Eq.mass= $\frac{2 \times 63}{2}$
=63

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Similar questions

I_{2} + 2 {S_{2} O_{3}}^{2 -} \to 2 I^{-} + {S_{4} O_{6}}^{2 -}

I_{2} + 2 S_{2} O_{3}^{2 -} \to 2 I^{-} + S_{4} O_{6}^{2 -}

I_{2} + 2 S_{2} O_{3}^{2 -} \to 2 I^{-} + S_{4} O_{6}^{2 -}

2 S_{2} O_{3}^{2 -} + I_{2} ⟶ S_{4} O_{6}^{2 -} + 2 I^{-}

N a_{2} S_{2} O_{3}

2 C u^{2 +} + 4 I^{-} \to C u_{2} I_{2} + I_{2}; I_{2} + 2 N a_{2} S_{2} O_{3} \to 2 N a I + N a_{2} S_{4} O_{6}

0.12 m o l e

C u S O_{4}

K I

120 m L

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