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Oxidation and Reduction

Which of the ...

Question

Which of the following will give any observable changes in solution with sodium peroxide?

A

Ferrous chloride

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B

Ammonium sulphide

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C

Copper sulphate

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D

Potassium iodide

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Solution

The correct options are
A Ferrous chloride
C Potassium iodide
D Ammonium sulphide
Sodium peroxide is an oxidising agent it convert lower oxidation to higher oxidation states.
$F e^{2 +}$ in $F e C l_{2}$ gets converted to $F e^{3 +} (N H_{4})$ gets converted to $(N_{2} + H_{2} S) K I$ gets converted to $I_{2} ↑$
There is no change in $C u S O_{4}$ due to achievement of maximum oxidation state.
A,B,D is correct answer.

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