The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the Hall-Héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. In the first step, aluminum hydroxide reacts to form alumina (Al,03) and water: 2AI(OH), (1) Al,0,(s) + 3H₂O(g) In the second step, alumina (Al2O3) and carbon react to form aluminum and carbon dioxide: +3C(s) 4A1(s) + 3 CO, (g) 2AL2O3(s) + 3C(s) Suppose the yield of the first step is 91.% and the yield of the second step is 95.%. Calculate the mass of aluminum hydroxide required to make 8.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.

The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the Hall-Héroult process is one of the most remarkable success stories of 19th century chemistry, turning aluminum from a rare and precious metal into the cheap commodity it is today. In the first step, aluminum hydroxide reacts to form alumina (Al,03) and water: 2AI(OH), (1) Al,0,(s) + 3H₂O(g) In the second step, alumina (Al2O3) and carbon react to form aluminum and carbon dioxide: +3C(s) 4A1(s) + 3 CO, (g) 2AL2O3(s) + 3C(s) Suppose the yield of the first step is 91.% and the yield of the second step is 95.%. Calculate the mass of aluminum hydroxide required to make 8.0 kg of aluminum. Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 94E: Aluminum is produced commercially by the electrolysis of Al2O3 in the presence of a molten salt. If...

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