To calculate the corrosion rate of copper metal in a galvanic couple with zinc metal, we need to determine the current flowing through the couple and then convert that current into a mass loss rate for the copper.First, we need to find the current flowing through the galvanic couple. The potential difference between the two metals is given as 1.5 V. The current can be found using Ohm's law:I = V/RHowever, we don't have the resistance R of the couple. Instead, we can use the Nernst equation to find the current:E = E - RT/nF * ln Q In this case, E is the potential difference 1.5 V , E is the standard potential difference between copper and zinc which can be found in a reference table , R is the gas constant 8.314 J/mol*K , T is the temperature in Kelvin, n is the number of electrons transferred 2 for the Cu/Zn couple , F is the Faraday constant 96,485 C/mol , and Q is the reaction quotient.Since we don't have enough information to calculate the current using the Nernst equation, we will assume that the current is directly proportional to the potential difference. This is a simplification, but it will allow us to estimate the corrosion rate.Now we can calculate the mass loss rate of copper due to the current flowing through the galvanic couple. The mass loss rate can be found using Faraday's law of electrolysis:m = I * t * M / n * F where m is the mass loss, I is the current, t is the time, M is the molar mass of copper 63.546 g/mol , n is the number of electrons transferred 2 for the Cu/Zn couple , and F is the Faraday constant 96,485 C/mol .Since we don't have the current I or the time t , we can't calculate the exact mass loss rate. However, we can express the mass loss rate in terms of the current:mass loss rate = I * M / 2 * F Now we can calculate the corrosion rate in terms of the current. The corrosion rate is the mass loss rate divided by the surface area of the copper:corrosion rate = mass loss rate / surface area corrosion rate = I * M / 2 * F / 2 cm corrosion rate = I * M / 4 * F Using the given values for the molar mass of copper M = 63.546 g/mol and the Faraday constant F = 96,485 C/mol , we can express the corrosion rate in terms of the current:corrosion rate = I * 63.546 g/mol / 4 * 96,485 C/mol corrosion rate = 0.1647 * I g/ cm*C This equation gives the corrosion rate of the copper metal in terms of the current flowing through the galvanic couple. To find the actual corrosion rate, more information about the current or the resistance of the couple is needed.