Corban E. answered 01/11/21
AP Chemistry Tutor and Former Teacher (Gen Chem, IB, O-Level, A-Level)
Half Reaction Eored(V)
F2 + 2 e– →2 F– +2.87 |
Ni2+ + 2 e– →Ni –0.25 |
Reduction of H from +1 to 0 in water
2 H2O + 2 e– →H2 + 2 OH– –0.83 |
The reaction you wrote for the cathode, 2H+ + 2e→ H2 (g), isn't really the one associated with water directly. Between the Ni and H2O reactions I put above, the Ni2+ one will require less voltage to cause it to occur