铝及其化合物的转化关系①2Al+6HCl=2AlCl3+3H2↑②4Al+3O22Al2O32Al+6H+=2Al3++3H2↑※③2Al+2NaOH+2H2O=2NaAlO2+3H2↑④Al2O3+6HCl=2AlCl3+3H2O2Al+2OH-+2H2O=2AlO2-+3H2↑Al2O3+6H+=2Al3++3H2O※⑤Al2O3+2NaOH=2NaAlO2+H2O⑥AlCl3+3NH3·H2O=Al(OH)3↓+3NH4ClAl2O3+2OH-=2AlO2-+H2OAl3++3NH3·H2O=Al(OH)3↓+3NH4+⑦Al(OH)3+3HCl=AlCl3+3H2O⑧2Al(OH)3Al2O3+3H2OAl(OH)3+3H+=Al3++3H2O☆⑨NaAlO2+HCl+H2O=Al(OH)3↓+NaCl或NaAlO2+2H2O+CO2=Al(OH)3↓+NaHCO3AlO2-+H++H2O=Al(OH)3↓AlO2-+2H2O+CO2=Al(OH)3↓+HCO3-※⑩Al(OH)3+NaOH=NaAlO2+2H2O☆⑾Al3++3H2OAl(OH)3胶体+3H+Al(OH)3+OH-=AlO2-+2H2O明矾净水⑿AlCl3+4NaOH=NaAlO2+3NaCl+2H2OAl3++4OH-=AlO2-+2H2O△△AlAl2O3Al(OH)3KAl(SO4)2NaAlO2AlCl3①②③④⑤⑥⑦⑧⑨⑩⑾⑿