摘要:33.Al2S3方法一2Al+2OH-+2H2O=2AlO2-+3H2­AlO2-+H++H2O=Al(OH)3↓方法二2Al+6H+=Al3++3H2­.Al3++3NH3?H20=Al(OH)3↓+3NH4+ (3)MgCl2 NH4Cl(4)SiCl4+3H2O=H2SiO3↓+4HCl

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