The number of moles of `KMnO_(4)` that will be needed to react with one mole of sulphite ion in acidic solution isA. `4//5`B. `2//5`C. `1`D. `3//5`

The number of moles of `KMnO_(4)` that will be needed to react with on

1.	The number of moles of `KMnO_(4)` that will be needed to react with one mole of sulphite ion in acidic solution isA. `4//5`B. `2//5`C. `1`D. `3//5`
Answer» Correct Answer - B Ionic equation for the reaction is `2MnO_(4)^(-)+6H^(+)+5SO_(3)^(2-)to2Mn^(2-)+5SO_(4)^(2-)+3H_(2)O` 5 moles of `SO_(3)^(2-)` ions are oxidized by `MnO_(4)^(-)` ions = 2 mol `:.` 1 mole of `SO_(3)^(2-)` ions is oxidized by `MnO_(4)^(-)` ions = 2/5 mol.

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The number of moles of `KMnO_(4)` that will be needed to react with one mole of sulphite ion in acidic solution isA. `4//5`B. `2//5`C. `1`D. `3//5`

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