The corrosion potential of copper in a galvanic couple with a standard hydrogen electrode can be calculated using the Nernst equation:E = E - RT/nF * ln Q where:E = corrosion potentialE = standard electrode potentialR = gas constant 8.314 J/molK T = temperature 298 K n = number of electrons transferred in the redox reaction 2 for copper F = Faraday's constant 96485 C/mol Q = reaction quotientFor a galvanic couple with a standard hydrogen electrode, the reaction quotient Q is equal to 1, as the concentrations of the involved species are at their standard states.The standard electrode potential of copper E is given as +0.34 V, and the standard electrode potential of hydrogen E is 0 V. Since the copper electrode is coupled with the standard hydrogen electrode, we can directly use the standard electrode potential of copper as the corrosion potential in this case:E = E Cu = +0.34 VSo, the corrosion potential of copper in a galvanic couple with a standard hydrogen electrode at 298 K is +0.34 V.