Determine the standard cell potential (Ecell0 ) and balanced equation for the voltaic cell:
MnO4-(aq)+I-(aq) → I2(aq)+ Mn2+(aq)
where:
MnO4-+5H+(aq)+5e+→ Mn2+(aq)+4H2O(l): Ered0 =+1.51V.
I2(s)+2e-→2I-(aq): Ered0 =+0.54 V.
A) 16H+(aq)+2MnO4-(aq)+10I-(aq)→5I2(aq )+2Mn2+(aq)+8H2O(l):
Ecell0 = -0.97 V.
B) 16H+(aq)+2MnO4-(aq)+10I-(aq)→5I2(aq )+2Mn2+(aq)+8H2O(l):
Ecell0 = -2.05 V.
C) 16H+(aq)+2MnO4-(aq)+10I-(aq)→5I2(aq )+2Mn2+(aq)+8H2O(l):
Ecell0 = +0.97 V.
D) 8H+(aq)+2MnO4-(aq)+10I-(aq)→5I2(aq) +2Mn2+(aq)+8H2O(l):
Ecell0 = +0.97 V.