The most useful ore of aluminum is bauxite,in which Al is present as hydrated oxides,Al₂O₃ ∙ xH₂O.The number of kilowatt-hours of electricity required to produce 4.00 kg of aluminum from electrolysis of compounds from bauxite is ________ when the applied emf is 5.00 V.

Question

Quizplus · Accepted Answer

The production of aluminum from bauxite requires electrolysis, which involves the conversion of Al3+ ions to aluminum metal. The process requires 3 moles of electrons per mole of aluminum. Using Faraday's laws of electrolysis, the charge required can be calculated, and then the energy in kilowatt-hours can be determined using the given voltage. The correct calculation leads to 59.6 kWh.

The Most Useful Ore of Aluminum Is Bauxite,in Which Al