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A student needs to calculate the Faraday constant for the reduction of copper ions in a solution using a current of 2.5 amperes for 5 minutes. If the mass of copper deposited on the cathode was 0.3 grams, what is the value of the Faraday constant?

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To calculate the Faraday constant, we can use the following formula:Faraday constant  F  =  I * t  /  n * m where:I = current  in amperes t = time  in seconds n = number of moles of electrons transferred per mole of substance  for copper, n = 2, as the reaction is Cu + 2e  Cu m = mass of substance deposited  in grams First, we need to convert the time from minutes to seconds:5 minutes * 60 seconds/minute = 300 secondsNext, we need to find the number of moles of copper deposited:The molar mass of copper  Cu  is approximately 63.5 g/mol. moles of Cu = mass of Cu / molar mass of Cumoles of Cu = 0.3 g / 63.5 g/mol  0.0047 molNow we can plug the values into the formula:F =  2.5 A * 300 s  /  2 * 0.0047 mol F  79545.74 C/molThe Faraday constant is approximately 79,546 C/mol.

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