Question

Iron plate was immersed into acid solution. Represent graphically the polarization curves of the system according to the following data, and then find: 1- The corrosion potential for a stagnant and a flowing solution if the limiting diffusion current density was 3 x 100% A/cm² and 2.5 x 10-4 A/cm² in both conditions respectively. 2- The corrosion rate estimated in mmpy in both cases. 3- The anodic and catodic polarization measured from the equilibrium potential for each electrode Given data: B = B = 0.05 V E. (Fe/Fe*2)= -0.44 V(SHE), I. (Fe/Fe*2) = 10 A cm2 E. (H/H) = -0.OV(SHE), I. (H/H/Fe = 10 A cm? atomic weight and density of Fe is 55.85 and 7.8 g/cm respectively.​

Answer 1

Give data :-

Ba=Bc=0.05

Eo(Fe/Fe+2)= -0.44V(SHE),Io(Fe/Fe+2)10-2 A cm -2