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Reduction of the metal centre in aqueous...

Reduction of the metal centre in aqueous permanganate ion involves

A

`3 e^(-)` in neutral medium

B

`5 e^(-)` in neutral medium

C

`3 e^(-)` in alkaline medium

D

`5 e^(-)` in acidic medium

Text Solution

Verified by Experts

The correct Answer is:
A, D

In acidic medium
`MnO_(4)^(-) rarr Mn^(2+)`
(v.f = 5)
In neutral /basic medium
`MnO_(4)^(-) rarr MnO_(2)`
(v. f. = 3)
In strongly basic medium
`MnO_(4)^(-) rarr MnO_(4)^(2-)`
(v.f. = 1)
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Knowledge Check

  • Reduction of metal centre in aqueous permanganate ion involves (1) 5 electrons in neutral medium (2) 5 electrons in acidic medium (3) 3 electrons in neutral medium (4) 3 electrons in alkaline medium

    A
    1, 2
    B
    2, 3
    C
    1, 3
    D
    2, 3, 4
  • Reduction involves

    A
    loss of electrons
    B
    addition of electrons
    C
    increasing in oxidation number
    D
    None of the above
  • Reduction involves

    A
    loss of electrons
    B
    gain in electrons
    C
    increase in oxidation number
    D
    addition of oxygen
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