exchange current density

Consider the electrode reaction O + e- = R. Under the conditions Cr=Co= 1mM, K^o=10^-7 cm/sec, Beta = 0.3: Calculate the exchange current density jo [uA/cm^2]

exchange current density

The following data were obtained for the reduction of metal ions A+ to metal A in a stirred solution at a 0.1 cm^2 electrode; the solution contained 0.01M A+. n(mV) -100 -120,-150, -180, -220, -280, -370, -500, -600 i(uA) -45.9, -62.6, -100, -170, -300, -510, -770, -965, -965 Calculate the exchange current density jo[uA/cm^2], the symmetry factor,Beta, and the thickness of the diffusion layer, delta[cm], knowing the diffusion coefficient, D(A+)=1.3 x 10^-5 cm^2/s. What will be the surface concentration of A+[M], c^s A+, at overpotential of -280 mV?

The Relation of Oxidation-Reduction to Electric Cells and Electrolysis

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Electrode Reactions

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The Corrosion of Iron, a Daniell cell, and Electrolysis of KI

1. Why would a "tin" cane (iron plated with tin) rust more easily whan a galvanized pipe (iron coated with zinc), when both are exposed to weathering? 2. Why are cans of tin plate, rather than of galvanized iron, used for preparing fruits and other food products? 3. When zinc dust is mixed with 1 F CuSO4, the solution becomes distinctly warm. How would the potential of a Daniell cell be affected if the cell were at 0 degrees Celcius instead of room temperature? 4. In the electrolysis of potassium iodide, the yellow color at one electrode is due to the formation of ______. This appeared at which electrode? What product forms at the other electrode where a pink color is seen?