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关于碱的化学方程式 1、低价态的还原性： 关于碱的化学方程式：4Fe(OH)2+O2+2H2O===4Fe(OH)3 2、与酸性物质的作用： 2NaOH+SO2(少量)==Na2SO3+H2O OH+SO2=SO32+H2O NaOH+SO2(足)==NaHSO3 OH-+SO2(足)=HSO3 2NaOH+SiO2==Na2SiO3+H2O OH-+SiO2=SiO32+H2O 2NaOH+Al2O3==2NaAlO2+H2O 2OH-+Al2O3=2AlO2+H2O 2KOH+Cl2==KCl+KClO+H2O Cl2+2OH=Cl+ClO+H2O NaOH+HCl==NaCl+H2O H++OH =H2O NaOH+H2S(足)==NaHS+H2O OH+H2S=HS+H2O 2NaOH+H2S(少量)==Na2S+2H2O 2OH+H2S=S2+2H2O 3NaOH+AlCl3==Al(OH)3+3NaCl 3OH+Al3+=Al(OH)3 NaOH+Al(OH)3==NaAlO2+2H2O (AlCl3和Al(OH)3哪个酸性强?) OH+Al(OH)3=AlO2+2H2O Ca(OH)2+2NH4Cl 2CaCl2+2NH3+2H2O (实验室制NH3) NaOH+NH4Cl NaCl+NH3+H2O Mg(OH)2+2NH4Cl==MgCl2+2NH3?H2O (Al(OH)3+NH4Cl不溶解) Ba(OH)2+H2SO4==BaSO4+2H2O 2H++2OH+Ba2++SO42=BaSO42H2O | 
