Activation polarization is the slowest step in a kinetic corrosion reaction for which an activation energy in the form of potential is required for the reaction to proceed. Explain briefly the four major steps of hydrogen evolution involved in the activation polarization. [8 marks]

The prevention of corrosion can be carried out by adding an inhibitor. Assess the treatment of corrosion using polyphosphate (an organic inhibitor) or sodium phosphate (inorganic inhibitor). [8 marks]

Summarize the technique of squeeze treatment when applying an inhibitor into the system. [4 marks]

Activation polarization is the slowest step in a kinetic corrosion reaction for which an activation energy in the form of potential is required for the reaction to proceed. Explain briefly the four major steps of hydrogen evolution involved in the activation polarization. [8 marks] The prevention of corrosion can be carried out by adding an inhibitor. Assess the treatment of corrosion using polyphosphate (an organic inhibitor) or sodium phosphate (inorganic inhibitor). [8 marks] Summarize the technique of squeeze treatment when applying an inhibitor into the system. [4 marks]