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Describe the oxidising property of KMnO(...

Describe the oxidising property of `KMnO_(4)` in neutral or faintly alkaline medium for its reactions with iodide and thiosulphate ions.

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(i) `2MnO_(4)^(-)+I^(-)+H_(2)O to 2MnO_(2)+2OH^(-)+IO_(3)^(-)`
(ii) `2MnO_(4)^(-)+3S_(2)O_(3)^(2-)+H_(2)O to 2OH^(-)+2MnO_(2)+3SO_(4)^(2-) +3S`
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