The exchange current density i0 is a measure of the rate of an electrochemical reaction and can be calculated using the following formula:i0 = k0 * n * F * C * Awhere:- i0 is the exchange current density A/cm - k0 is the electrochemical rate constant cm/s - n is the number of electrons transferred in the reaction for the oxidation of copper, Cu -> Cu + 2e, n = 2 - F is the Faraday constant 96485 C/mol - C is the concentration of the reactant 1 M for CuSO solution - A is the surface area of the electrode 0.05 cm Now, we can plug in the values and calculate the exchange current density:i0 = 5.2 10^-3 cm/s * 2 * 96485 C/mol * 1 mol/L * 0.05 cm i0 = 0.0104 * 96485 * 0.05i0 = 50.3444 A/cmThe exchange current density for the oxidation reaction of copper in a 1 M CuSO solution is approximately 50.34 A/cm.