The oxidation potential of a hydrogen electrode at pH = 1 is (T = 298 K): |
0.059 volt 0 volt –0.059 volt 0.59 volt |
0.059 volt |
The hydrogen electrode can be represented by the given reaction \(H_2 \rightarrow 2H^+ + 2e^−\) Given, \(pH =1\) also, \([H^+] = 10^{−1}\) and for hydrogen electrode, \(E^o = 0\) ∴ \(E = \frac{0.0591}{2}log\frac{[H_2]}{[H^+]^2}\) or, \(E =\frac{0.0591}{2}log\left[\frac{1}{10^{−1}}\right]^2\) or, \(E = \frac{0.0591}{2} × 2 = 0.0591 V\) |