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Question
In the first stage of the Bayer process bauxite is mixed with a strong base. What is the purpose of the strong base?A) Strong base dissolves the silicate constituents of the ore, leaving pure aluminum oxide as a precipitate to be collected by filtration.
B) Strong base favors the formation of a soluble anion of the aluminum, leaving the silicates and other impurities as precipitates to be removed by filtration.
C) Strong base dissolves the silicate constituents of the ore and precipitates the aluminum as Al(OH)3for collection by filtration.
D) Strong base dissolves the silicates and aluminum constituents of the ore, allowing for the removal of any insoluble impurities by filtration and eventual precipitation of the aluminum from the filtrate.
E) The strong base, along with HF, is used to extract the aluminum from the ore as cryolite, a compound used in the electrolytic reduction of aluminum.
Answer
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Related questions
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Q:
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Q:
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Q:
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Q:
If a reaction is first-order with respect to a particular reactant, when the concentration of that reactant is increased by a factor of 2, the reaction rate will _____.
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Q:
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