|
|
|
|
|
Specific Corrosion Reaction Pair
|
 |
|
|
|
|
Anodic Reaction |
|
|
|
H2 + 2 OH-
 2 H2O +
2
e- |
|
| This is the oxidation reaction. |
|
Dissolved Hydrogen (gas), Hydroxyl will be consumed to populate the electrolyte with Water molecules/ions.
|
|
|
|
|
|
|
|
|
 |
e-
electrons conducted
through metal substrate |
|
|
|
|
Cathodic Reaction |
|
|
|
|
O2 + 2 H2O +
4 e-
4 OH- |
|
| This is the reduction reaction. |
|
Dissolved Oxygen, Water will be consumed from the electrolyte, releasing Hydroxyl molecules/ions back to the electrolyte.
|
|
|
|
|
|
|
|
|
|
|
The driving potential between the two reactions is 1.2 Volts provided the dissolved species O2 and H2O are at 1 molar concentrations.
|
|
|
