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Potassium permaganate acts as an oxidant...

Potassium permaganate acts as an oxidant in neutral alkaline as well as acidic media. The final products obtained from it in the three conditions are , respectively

A

`MnO_(2), MnO_(3),Mn^(2+)`

B

`MnO_(2)^(2-),Mn^(3+),Mn^(2+)`

C

`MnO_(2),MnO_(4)^(2-),Mn^(3+)`

D

`MnO,MnO_4,Mn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
`MnO_(2), MnO_(3),Mn^(2+)`
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Pottassium permanganate acts as an oxidant in neutral, alkaline as well as acidic media. The final product obtained from it in three condition are respectively:

Potassium permanganate is prepared by fusing pyrolusite with caustic potash in the presence of air or some oxidising agent which gives a green mass. The green mass is then extracted with water and treated with a current of Cl_2 to form potassium permanganate. In the laboratory, it is prepared by oxidising a manganese (II) salt by peroxosulphate. It acts as an oxidising agent in neutral, alkaline or acidic solutions. Name the green mass obtained by heating pyrolusite with KOH in the presence of air and its reaction equation.

Knowledge Check

  • Potassium permanganate acts as an oxidant in neutral, alkaline as well as acidic media. The final products obtained from it in the three conditions are, respectively

    A
    `MnO_(2),NnO_(2),Mn^(2+)`
    B
    `MnO_(4)^(2-),Mn^(3+),Mn^(2+)`
    C
    `MnO_(2),MnO_(4)^(2-),Mn^(3+)`
    D
    `MnO,MnO_(4),Mn^(2+)`

  • Potassium permaganate acts as oxidant in alkaline and acidic media. The final products formed from KMnO_(4) in the two conditions are respectively

    A
    `MnO^(2-) and Mn^(3+)`
    B
    `Mn^(3+) and Mn^(2+)`
    C
    `Mn^(2+) and Mn^(3+)`
    D
    `Mn^(2+), MnO_(2)`

  • Potassium permanganate acts as an oxidising agent in acidic, alkaline as well as neutral media. Which among the following statements is incorrect ?

    A
    `N=M//5` (in acid medium )
    B
    `N=M//3` (in alkaline medium)
    C
    `N=M//3` ( in neutral medium)
    D
    `N=M` ( in alkaline medium)

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