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1、备战中考化学：无机化学方程式A打头AAgAg+2HNO3(浓)=AgNO3+NO2+H2O2AgCl=2Ag + Cl2(见光或受热)AgNO3 + NaCl = AgCl + NaNO3 AgNO3 + NaBr= AgBr + NaNO3AgNO3 + NaI = AgI + NaNO32AgNO3+H2S=Ag2S+2HNO3Ag3PO4+3HNO3=H3PO4+3AgNO3AlAl+3O2 2Al2O3(纯氧) 2Al+3S Al2S3 2Al+3Cl2 2AlCl34Al(固) + 3O2(气) = 2Al2O3(固) + 3349.3 kJmol-14Al+3MnO2 2Al2O3
2、+3Mn 2Al+Cr2O3 Al2O3+2Cr2Al+Fe2O3 Al2O3+2Fe 2Al+3FeO Al2O3+3Fe2Al + 6HCl = 2AlCl3 + 3H2 2Al+3H2SO4=Al2(SO4)3+3H22Al+6H2SO4(浓) Al2(SO4)3+3SO2+6H2OAl+4HNO3(稀)=Al(NO3)3+NO+2H2O (Al、Fe在冷、浓的H2SO4、HNO3中钝化)2Al+2NaOH+2H2O=2NaAlO2+3H2Al2O3、Al(OH)3Al2O3+3H2SO4=Al2(SO4)3+3H2O (Al2O3是两性氧化物)Al2O3+2NaOH=2NaAlO2+H
3、2O2Al(OH)3 Al2O3+3H2OAl(OH)3+3HCl=AlCl3+3H2O 2Al(OH)3+3H2SO4=Al2(SO4)3+6H2OAl(OH)3+NaOH=NaAlO2+2H2O铝盐AlCl3+3NaOH=Al(OH)3+3NaClAlCl3+3NH3H2O=Al(OH)3+3NH4Cl2AlCl3+3Na2CO3+3H2O=2Al(OH)3+3CO2+6NaClAlCl3+3NaHCO3=Al(OH)3+3CO2AlCl3+3NaAlO2+ 6H2O=4Al(OH)3AlCl3 + 4NaOH = NaAl(OH)4 + 3NaClAl2(SO4)3+3Na2S+ 6H2O=2Al(OH)3+3H2SAl4C3 + 12H2O = 4Al(OH)3 + 3CH4AsAs2O3 + 6Zn + 12HCl = 2AsH3 + 6ZnCl2 + 3H2O3As2S3 + 28HNO3(稀) + 4H2O = 6H3AsO4 + 9H2SO4 + 28NOAs2S3 + 28HNO3(浓) = 2H3AsO4 + 3H2SO4 + 28NO2 + 8H2O /
