General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter21: Chemistry Of The Main-group Elements
Section: Chapter Questions
Problem 21.200QP
Related questions
Question
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
Al2O3
and water:
2AlOH3s + Al2O3s -> 3H2Og
In the second step, alumina
Al2O3
and carbon react to form aluminum and carbon dioxide:
2Al2O3s + 3Cs + 4Als -> 3CO2g
Suppose the yield of the first step is
83.%
and the yield of the second step is
78.%
. Calculate the mass of aluminum hydroxide required to make
7.0kg
of aluminum.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
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