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Potassium Permanganate

In a neutral ...

Question

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

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Solution

$8 M n O_{4}^{-} + 3 S_{2} O_{3}^{2 -} + H_{2} O f a i n t l y a l k a l i n e - -------- \to 8 M n O_{2} + 6 S O_{4}^{2 -} + 2 O H^{-}$

$∴$ 8 moles $M n O_{4}^{-}$ produces 6 moles $S O_{4}^{2 -}$

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