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AlCl3+NaOH---> ZnCl2+NaOH---> FeCl3+NaOH---> CuCl2+NaOH--->

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AlCl3 + 3NaOH => Al(OH)3 + 3NaCl sau AlCl3 + 4NaOH ---> Na[Al(OH)4] + 3NaCl ZnCl2 + 2NaOH => Zn(OH)2 + 2NaCl FeCl3 + 3NaOH => Fe(OH)3 + 3NaCl CuCl2 + 2NaOH => Cu(OH)2 + 2NaCl

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