It is apparent that they must use an outside source of electrical power to drive the dissolution of the iron. They use a small current so that the dissolution proceeds with the minimum voltage required. Assume standard values for the electrochemical potentials.

How much electrical energy supplied this way is thus required to dissolve an additional 1 kg of iron? Give your answer in kJ.

Question

It is apparent that they must use an outside source of electrical power to drive the dissolution of the iron. They use a small current so that the dissolution proceeds with the minimum voltage required. Assume standard values for the electrochemical potentials.

How much electrical energy supplied this way is thus required to dissolve an additional 1 kg of iron? Give your answer in kJ.