Saved Bookmarks
| 1. |
The number of moles of `KMnO_(4)` that will be needed to react with `1 mol` of sulphite ion in acidic solution isA. `4//5`B. `2//5`C. 1D. `3//5` |
|
Answer» Correct Answer - B `2KMnO_(4)+3H_(2)SO_(4)toK_(2)SO_(4)+2MnSO_(4)+3H_(2)O+5[O]` `[MnO_(4)^(-)+8H^(+)+5e^(-)toMn^(2+)+4H_(2)O]xx2` `[SO_(3)^(2-)+H_(2)OtoSO_(4)^(2-)+2H^(+)+2e^(-)]xx5` `2MnO_(4)^(-)+6H^(+)+5SO_(3)^(2-)to2Mn^(2+)+5 SO_(4)^(2-)+3H_(2)O` 5 moles of sulphite ions react with =2 moles of `MnO_(4)^(-)` So , 1 mole of sulphite ions react with `=(2)/(5)" moles of "MnO_(4)^(-)`. |
|