Indicate in each reaction which one is oxidised or reduced if any- CuSO4 - 4KI - 2CuI - I2 - 2K2SO4In the above reaction- which one of the following is oxidised-

The correct option is C KI The balanced chemical equation is CuSO_4 + 4KI → 2CuI + I_2 + 2K_2SO_4 .The oxidation number of copper changes from +2 to ...

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Standard XII

Chemistry

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Indicate in e...

Question

Indicate in each reaction which one is oxidised or reduced if any:

$C u S O_{4} + 4 K I \to 2 C u I + I_{2} + 2 K_{2} S O_{4}$

In the above reaction, which one of the following is oxidised?

K I

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C u S O_{4}

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I_{2}

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None of these

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Solution

The correct option is C $K I$
The balanced chemical equation is $C u S O_{4} + 4 K I \to 2 C u I + I_{2} + 2 K_{2} S O_{4}$ .
The oxidation number of copper changes from +2 to +1.
Thus, copper is reduced as its oxidation number decreases.
The oxidation number of iodine changes from -1 to 0.
Thus, iodine is oxidized as its oxidation number increases.

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Similar questions

Q. Indicate which of the substance/ion in the following reaction is an oxidising agent and which is a reducing agent?

2 C u^{2 +} + 4 I^{-} \to 2 C u I + I_{2}

Q. In the reaction

2 C u S O_{4} + 4 K I \to C u_{2} I_{2} + 2 K_{2} S O_{4} + I_{2}

, the equivalent weight of

C u S O_{4}

is:

(M w = 159.5 g

m o l^{- 1})

Indicate in given reaction which one is oxidised or reduced if any :

H_{2} S O_{3} + 2 H_{2} S ⟶ 3 S + 3 H_{2} O

Q. Which one of the following reactions is a redox reaction?
(a)

C u S O_{4} + 4 N H_{3} \to C u (N H_{3})_{4}] S O_{4}

(b)

N a_{2} S O_{4} + B a C l_{2} \to B a S O_{4} + 2 N a C l

(c)

S O_{2} + H_{2} O \to H_{2} S O_{3}

(d)

2 C u S O_{4} + 4 K I \to C u_{2} I_{2} + 2 K_{2} S O_{4} + I_{2}

Q. In the reaction,

2 C u S O_{4} + 4 K I ⟶ C u_{2} I_{2} + 2 K_{2} S O_{4} + I_{2}

, the ratio of equivalent mass of

C u S O_{4}

to its molar mass is :

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Indicate in each reaction which one is oxidised or reduced if any:CuSO4+4KI→2CuI+I2+2K2SO4In the above reaction, which one of the following is oxidised?

Indicate in each reaction which one is oxidised or reduced if any:

$C u S O_{4} + 4 K I \to 2 C u I + I_{2} + 2 K_{2} S O_{4}$

In the above reaction, which one of the following is oxidised?