Electrode Potential/voltage

• Way to measure reactivity or corrosion driving force
• pure metal at standard
• if both one side:

  large - small = voltage

  Diff sides:

  add both (ignore -)
• Redox potential is a tool to compare the reactivity of corrosion
• Does not tell how fast
• += normal

  -=more reactive potential
• Non- standard Condition:

  (<1M)= dilute

  ions decrease therefore driving force for corrosion increase

  Driving force for corrosion (anodic reaction)
• If Cion=1

  E=Edot