The equivalent mass of $K I O_{3}$ in the reaction,
$2 c r (O H)_{3} + O H^{-} + K I O_{3} \to 2 C r O_{4}^{2 -} + K I + 5 H_{2} O$ is :

molecular mass

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molecular mass/3

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molecular mass/6

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molecular massl2

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Solution

The correct option is C molecular mass/6

The balanced chemical reaction is:

$2 C r (O H)_{3} + O H^{-} + K I O_{3} \to 2 C r O_{4}^{2 -} + K I + 5 H_{2} O$

The oxidation number of iodine changes from +5 to -1.

The change in the oxidation number is 6.

The equivalent mass of potassium iodate is $\frac{Molar mass of potassium iodate}{Change in the oxidation number of iodine} = \frac{molecular mass}{6}$

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Similar questions

K I O_{3}

2 C r {(O H)}_{3} + O H^{-} + K I O_{3} ⟶ 2 C r O_{4}^{2 -} + K I + 5 H_{2} O

K I O_{3}

2 C r (O H)_{3} + 4 O H + K I O_{3} \to 2 C r O_{4}^{2 -} + 5 H_{2} O + K I

2 C r (O H)_{3} + O H^{-} + K I O_{3} \to 2 C r O_{4}^{2 -} + 5 H_{2} O + K I

K I O_{3}

K I O_{3}

2 C r (O H)_{3} + 4 O H + K I O_{3} \to 2 C r O_{4}^{2 -} + 5 H_{2} O + K I

K I O_{3}

2 C r (O H)_{3} + 4 O H + K I O_{3} \to 2 C r O_{4}^{2 -} + 5 H_{2} O + K I

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