ElectrochemistryHard

Question

MnO4- + 8H+ + 5e- → Mn2+ + 4H2O ;  Eo = 1.51 V  ;  ᐃGo1 = - 5 × 1.51 × F
MnO2 + 4H+ + 2e- → Mn2+ + 2H2O ;  Eo = 1.23 V   ;   ᐃGo2 = - 2 × 1.23 × F
EoMNO4-|MnO2 is

Options

A.1.70 V
B.0.91 V
C.1.37 V
D.0.548 V

Solution

EoMNO4-|MnO2 = = 1.7 volt

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