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Potassium Permanganate

Which of the ...

Question

Which of the following products is formed by the reaction of manganese (II) ion salt with peroxodisulphate $(S_{2} O_{8}^{2 -})$ ?

M n_{2} O_{7}

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M n_{3} O_{4}

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M n O_{4}^{2 -}

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M n O_{4}^{-}

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Solution

The correct option is C $M n O_{4}^{-}$
Reaction of process:
$2 M n^{2 +} + 5 S_{2} O_{8}^{2 -} + 8 H_{2} O \to 2 M n O_{4}^{-} + 10 S O_{4}^{2 -} + 16 H^{+}$

Suggest Corrections

Similar questions

N a_{2} S_{2} O_{8}

(S_{2} O_{8}^{2 -})

O_{2} (g)

O_{2} (g) + 4 H^{+} (a q) + 4 e \to 2 H_{2} O E^{o} = 1.23 V

S_{2} O_{8}^{2 -} (a q) + 2 e \to 2 S O_{4}^{2 -} (a q) E^{o} = 2.01 V

(I^{-})

[S_{2} O_{8}^{2 -}]

2 I^{-} (a q) + S_{2} O_{8}^{2 -} (a q) \to I_{2} (a q) + 2 S_{2} O_{4}^{- 2} (a q) (s l o w)

I_{2} (a q) + 2 S_{2} O_{3}^{2 -} (a q) \to 2 I^{-} (a q) + S_{4} O_{6}^{2 -} (a q) (f a s t)

S_{2} O_{3}^{2 -}

O_{2} (g) + 4 H^{\oplus} (a q) + 4 e^{-} \to 2 H_{2} O (l)

E^{\oplus} = 1.23 V

S_{2} O_{8}^{2 -} (a q) + 2 e^{-} \to 2 S O_{2}^{4 -} (a q)

E^{⊖} = 2.01 V

(e . g ., N a_{2} S_{2} O_{8})

(S_{2} O_{8}^{2 -})

O_{2} (g)

Peroxodisulphate salts (e.g., $N a_{2} S_{2} O_{8}$ ) are strong oxidizing agents used as
bleaching agents for fats, oils, etc.

Given :

$O_{2} (g) + 4 H^{\oplus} (a q) + 4 e^{-} \to 2 H_{2} O (l)$

$E^{⊖} = 1.23 V$

$S_{2} O_{8}^{2 -} (a q) + 2 e^{-} \to S O_{4}^{2 -} (a q)$

$E^{⊖} = 2.01 V$

M n O_{4}^{-} (a q) ⟶ M n O_{4}^{2 -} (a q)

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