Pyrolusite in MnO2 is used to prepare KMnO4- Steps are Mn O 2 Mn O 4 2- Mn O 4 - I and II are-

The correct option is A fused with KOH /air, electrolyte oxidation. Mn O _ 2 Mn O _ 4 ^ 2 Mn O _ 4 ^ This method is used to manufacture KMnO ...

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Byju's Answer

Standard XII

Chemistry

Potassium Permanganate

Pyrolusite in...

Question

Pyrolusite in $M n O_{2}$ is used to prepare $K M n O_{4}$ . Steps are
$M n O_{2} I \to M n O_{4}^{2 -} I I - \to M n O_{4}^{-}$
$I$ and $I I$ are:

fused with

K O H

/air, electrolyte oxidation.

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fused with

K O H

/air, electrolyte reduction.

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fused with conc.

H N O_{3}

/air, electrolyte reduction.

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all are correct.

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Solution

The correct option is A fused with $K O H$ /air, electrolyte oxidation.
$M n O_{2} K O H - -- \to M n O_{4}^{2 -} E l e c t r o l y t i c o x i d a t i o n - ------------ \to M n O_{4}^{-}$

This method is used to manufacture $K M n O_{4}$ on a large scale.

Hence ,option A is correct.

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Similar questions

Q. Pyrolusite is MnO

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and is used to prepare KMnO

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Steps I and II, respectively, are

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used to prepare

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M n O_{2} I \to M n O_{2}^{2 -} I I - \to M n O_{4}^{-}

Steps

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_{2}

used to prepare KMnO

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. Steps are,

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.
Steps I and II are :

Q. Pyrolusite is

M n O_{2}

used to prepare

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Steps I and II are:

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Pyrolusite in MnO2 is used to prepare KMnO4. Steps areMnO2I→MnO2−4II−→MnO−4I and II are:

The correct option is A fused with KOH/air, electrolyte oxidation.MnO2KOH−−−→MnO2−4Electrolyticoxidation−−−−−−−−−−−−−→MnO−4This method is used to manufacture KMnO4 on a large scale.Hence ,option A is correct.

Pyrolusite in $M n O_{2}$ is used to prepare $K M n O_{4}$ . Steps are
$M n O_{2} I \to M n O_{4}^{2 -} I I - \to M n O_{4}^{-}$
$I$ and $I I$ are:

The correct option is A fused with $K O H$ /air, electrolyte oxidation.
$M n O_{2} K O H - -- \to M n O_{4}^{2 -} E l e c t r o l y t i c o x i d a t i o n - ------------ \to M n O_{4}^{-}$

This method is used to manufacture $K M n O_{4}$ on a large scale.

Hence ,option A is correct.