5. An inventor decides to make batteries from old aluminum cans and rusty scrap iron, the thought being that the reaction Fe2O3 + Al -> Al2O3 + Fe should generate electric power. Using the free energy of formation find the standard electrode potential for this reaction. What masses of Fe2O3 and Al would be needed to generate 1 Joule of energy?© BrainMass Inc. brainmass.com September 19, 2018, 8:50 am ad1c9bdddf - https://brainmass.com/chemistry/energetics-and-thermodynamics/free-energy-formation-133458
The solution examines free energy of formation.