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Write the chemical equations involved in the leaching of bauxite ore to prepare pure alumina. |
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Answer» Solution :(i) `Al_(2)O_(3)(s)+2NaOH(AQ)+33H_(2)O(l)to2Na[Al(OH)_(4)]` (II) `2NA[Al(OH)_(4)](aq)+CO_(2)(g)to Al_(2)O_(3)xH_(2)O(s)+2NaHCO_(3)` (iii) `Al_(2)O_(3)xH_(2)O(s) overset(1470K)to Al_(2)O_(3)(s)+xH_(2)O(g)` |
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