Question

Calculate E° for the following voltaic cell:
MnO2(s) + 4 H+(aq) + 2 I─(aq) ⟶ Mn2+(aq) + 2 H2O(l) + I2(s)

Answer 1

2I^- (aq) ---------------> I2(s) + 2e^-      E0   = -0.54v

MnO2(s) + 4H^+ (aq) + 2e^- ------> Mn^2+(aq) + 2H2O(l)               E0 = 1.23v

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MnO2(s) + 4 H+(aq) + 2 I^-(aq)--------> Mn2+(aq) + 2 H2O(l) + I2(s)    E0cell = 0.69v >>>answer

E0cell = 0.69v >>>answer