The standard reduction potential of `Cd^(2+)(aq)` is `-0.402V`.
A voltaic cell described by :
`Cd(s) + 2H^(+)(aq) rightarrow Cd^(2+)(aq) + H_(2)(aq)`
has [Cd^(2+)] = 0.900 m` and a hydrogen pressure of 0.975 atm. Its cell potential at `25^(@)C` is measured as `E = +9.192V`. What is the pH in the `H^(+) | H-(2)` half-cell?
A. 3.o28
B. 3.58
C. 6.54
D. 7.15
