Do following half-reactions have electrode potential that depends on pH? I know H+ or OH- ions wouldn't be included in Nernst equation for these, but would pH affect chemical balance in these reactions, and therefore electrode potentials?
Br2+2e-
2Br-
Cl2+2e-
2Cl-
I2+2e-
2I-
S2O8+2e-
2SO42-