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In neutral or faintly alkaline medium, t...

In neutral or faintly alkaline medium, thiosulphate is quantitatively oxidized by `KMnO_(4)` is

A

`SO_(3)^(2-)`

B

`SO_(4)^(2-)`

C

`SO_(2)`

D

`SO_(5)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
In neutral or faintly alkaline medium thiosulphate is quantitatively oxidized by `KMnO_(4)` to `SO_(4)^(2-)`
`8KMnO_(4)+3Na_(2)S_(2)O_(3)+ H_(2) O to 3K_(2)SO_(4)+8MnO_(2)+3Na_(2)SO_(4)+2KOH`
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Knowledge Check

  • In netural of faintly alkaline medium, thiosulphate is quantitatively oxidized by KMnO_(4) to

    A
    `So_(3)^(2-)`
    B
    `So_(4)^(2-)`
    C
    `So_(5)^(2-)`
    D
    `S_(2)O_(8)^(2-)`

  • In faintly alkaline solution, 4 moles of permanganate anion quantitatively oxidize thiosulphate anions to produce X moles of sulphate anion. The value of X

    A
    8
    B
    6
    C
    4
    D
    3

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