铝三角示意图:
铝三角有关的化学方程式和离子方程式:
①
AlCl3+3NaOH==Al(OH)3↓+3NaCl
Al3++3OH-==Al(OH)3↓
Al2(SO4)3+6NH3·H2O==2Al(OH)3↓+3(NH4)2SO4
Al3++3NH3·H2O==Al(OH)3↓+3NH4+
② Al(OH)3+NaOH==NaAlO2+2H2O
Al(OH)3+OH-==AlO2-+2H2O
③ AlCl3+4NaOH==NaAlO2+3NaCl+2H2O
Al3++4OH-==AlO2-+2H2O
④ NaAlO2+HCl+H2O==Al(OH)3↓+NaCl
AlO2-+H++H2O==Al(OH)3↓
NaAlO2+CO2(足量)+2H2O==Al(OH)3↓+NaHCO3
AlO2-+CO2+2H2O==Al(OH)3↓+HCO3-
2NaAlO2+CO2(不足)+3H2O==2Al(OH)3↓+Na2CO3
2AlO2-+CO2+3H2O==2Al(OH)3↓+CO32-
⑤ Al(OH)3+3HCl==AlCl3+3H2O
Al(OH)3+3H+==Al3++3H2O
⑥ NaAlO2+4HCl==AlCl3+NaCl+2H2O
AlO2-+4H+==Al3++2H2O
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