3:06 How to Draw the Lewis Dot Structure for MnO4-: Permanganate ion 4:15 Demi-équation oxydoréduction : MnO4- / Mn2+ 7:44 Redox Titration between MnO4- and Fe2+ 0:56 How to find the Oxidation Number for Mn in the MnO4 - ion. 1:21 MnO42-, in acidic medium, disproportionates to :(1) Mn2O7 and MnO2(2) MnO4- and MnO