Why does al2o3 dissolve in naoh but fe2o3 does not dissolve in naoh?
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Simple non-ignited Al2O3 or Al(OH)3 is soluble in common acids or aqueous NaOH forming Al+3 salt (in case of acid) or NaAlO2 (with aq. NaOH). But ignited alumina is insoluble in common acids.
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