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in neutral or faintly alkaline solution,...

in neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidize thiosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is

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The correct Answer is:
6
In neutral medium , `MnO_4^-` oxidises `S_2O_3^(2-)` ion to `SO_4^(2-)` ion
`8MnO_4^(-) + 3S_2O_3^(2-) + H_2O to 8MnO_2 + 6SO_4^(2-) + 2OH^(-)`
8 moles of `MnO_4^(-)` produce 6 moles of `SO_4^(2-)` ions . ` therefore x = 6`
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