Thursday, May 29, 2014

basic principle of CORROSION

Question: Analyze the relation  between corrosion reaction and free energy change

answer: free energy change is the single factor to determine the possibility of a corrosion reaction.

if initial state, Gi and final state, Gf , the free energy change (delta G) = Gf-Gi < 0

For spontaneous reaction to occur, the free energy change must be negative!






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