posted by Anonymous .
how do you find the standard electrode potentials of KMnO4 and MnCl2?
and is the standard electrode potential of MnO2 1.28?
In your text. In your notes? On the web?
MnO4^- + 8H^+ 5e ==> Mn^+2 + 4H2O is -1.51 volts.
MnO2 + 4H^+ + 2e ==> Mn^+2 + 2H2O is 1.23 volts in my tables.