4Al + 3O2 = 2Al2O3
Al2O3 +3 H2SO4 = Al2(SO4)3 + 3H2O
Al2(SO4)3 +6 NaOH = 2Al(OH)3 + 3Na2SO4
2Al(OH)3 = Al2O3 + 3H2O
Al2O3 +6 HNO3 =2 Al(NO3)3 +3 H2O
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4Al + 3O2 = 2Al2O3
Al2O3 +3 H2SO4 = Al2(SO4)3 + 3H2O
Al2(SO4)3 +6 NaOH = 2Al(OH)3 + 3Na2SO4
2Al(OH)3 = Al2O3 + 3H2O
Al2O3 +6 HNO3 =2 Al(NO3)3 +3 H2O