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Al2O3 Can Be Separated from Iron Oxide Impurities in Bauxite

Question 139

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Al2O3 can be separated from iron oxide impurities in bauxite by dissolving the Al2O3 in hot aqueous NaOH.Give the formula of the aluminum complex ion that forms,and write a balanced net ionic equation for its formation by the reaction between Al2O3 and NaOH.

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Al(OH)4-,Al2O...

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