$3-9.$ A copper valve is used in the waste exit line from a pharmaceutical process reactor which is producing iodine$-$containing organics. The waste stream is composed of air saturated $15\%$ sulfuric acid with the following impurities: ferric sulfate, ferrous sulfate, potassium iodide, and iodine.

From the electrochemical data listed below, determine the corrosion potential and corrosion rate in this brew. Assume all Tafel constants are $0\mathrm{.}1V.$