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Potassium Permanganate

In neutral me...

Question

In neutral medium, $K M n O_{4}$ acts as a powerful oxidizing agent according to the reaction:
$2 K M n O_{4} + H_{2} O \to 2 M n O_{2} + 2 K O H + 3 (O)$ . The change involves

A

Loss of

3 e^{-}

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B

Increase of

3 e^{-}

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C

Loss of

5 e^{-}

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D

Gain of

5 e^{-}

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Solution

The correct option is B Increase of $3 e^{-}$
$M n O_{4}^{-} + 2 H_{2} O + 3 e^{-} \to M n O_{2} + 4 O H^{-}$

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Similar questions

Q. In neutral medium,

K M n O_{4}

acts as a powerful oxidizing agent according to the reaction:

2 K M n O_{4} + H_{2} O \to 2 M n O_{2} + 2 K O H + 3 (O)

. The change involves

Q. In an alkaline medium,

K M n O_{4}

reacts as follows -

2 K M n O_{4} + 2 K O H \to 2 K_{2} M n O_{4} + H_{2} O + O

Equivalent weight of

K M n O_{4}

K M n O_{4}

acts as an oxidising agent in the neutral medium and gets reduced to

M n O_{2}

.The equivalent weight of

K M n O_{4}

in neutral medium

Q. In an alkaline medium,

K M n O_{4}

reacts as follows (At wt. of

K = 39.09

M n = 54.94

O = 16.0

2 K M n O_{4} + 2 K O H \to 2 K_{2} {M n O}_{4} + H_{2} O + [O]

i) The equivalent weight of

K M n O_{4}

in alkaline medium is 158.
ii) The number of electrons gained by one molecule of

K M n O_{4}

in the alkaline medium is 1.
iii) In the alkaline medium,

K M n O_{4}

acts as a reducing agent.

Select the correct option.

$K M n O_{4}$ acts as an oxidising agent in the neutral medium and gets reduced to $M n O_{2}$ . The equivalent weight of $K M n O_{4}$ in neutral medium is ______ .

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