Question

Exercice 1 17.17 Lead experiences corrosion in an acid solu- tion according to the reaction Pb + 2H — Pb2+ + H, The rates of both oxidation and reduction half-reactions are controlled by activation polarization. (a) Compute the rate of oxidation of Pb (in mol/cms) given the following activation polarization data: For Lead For Hydrogen V POP = -0.126 V V=OV - 2 x 10A/cm² i = 10 x 10 A/cm B = +0.12 B = -0.10 (b) Compute the value of the corrosion potential. Question (a) 8x10-14 mol/cm2-5 8x10-10 mol/cm2-5 4x10-14 mol/cm2-5 4x10-10 mol/cm2-s Question (b) * 0.19 V 0.019 V -0.18 V 0.119 V