In a galvanic couple, the corrosion potential E_corr can be determined using the standard reduction potentials E of the two half-reactions involved. The overall cell potential E_cell can be calculated using the Nernst equation:E_cell = E_cathode - E_anodeIn this case, the copper electrode acts as the cathode reduction occurs , and the zinc electrode acts as the anode oxidation occurs . The standard reduction potentials for the two half-reactions are given as:E_Cu/Cu = +0.34 VE_Zn/Zn = -0.76 VNow, we can calculate the overall cell potential:E_cell = E_Cu/Cu - E_Zn/ZnE_cell = +0.34 V - -0.76 V E_cell = +0.34 V + 0.76 VE_cell = +1.10 VThe corrosion potential of the zinc electrode in the galvanic couple with the copper electrode is +1.10 V.