.化学方程式Cl2+2FeCl2==2FeCl3==(在水溶液中：N2+3H2==2NH3==N2+3Mg==Mg3N2==N2+3C一、非金属单质Cl2+2Fe2+==2Fe3++3Cl==)a==Ca3N2(F2，Cl2,O2,S,N2,P,C,Si，H)Cl2+2NaBr==2NaCl+Br2==Cl2+2Br===2CN2+3Ba==Ba3N2==N2+6Na==2Na3N==N2+61、氧化性：l==+Br2K==2K3NF2+H2==2HF==(阴暗处爆炸)Cl2+2KI==2KCl+I2==Cl2+2I===2Cl==+IN2+6Rb==2Rb3N==N2+2Al==2AlNF2+Xe(过量)==XeF22P4+6H2==4PH3==P+3Na==Na3P==2P+3Zn=2F2(过量)+Xe==XeF4==(XeF4是强氧化3Cl2(过量)+2KI+3H2O==6HCl+KIO3=Zn3P2剂，能将Mn2+氧化为MnO4–)3Cl2+I–+3H2O=6H++6Cl–+IO3–H2+2Li==2LiHnF2+2M==2MFn(M表示大部分金属)5Cl2+I2+6H2O==2HIO3+10HCl2、还原性2F2+2H2O==4HF+O2==(水是还原剂)5Cl2+I2+6H2O=10Cl–+IO3–+12H+S+O2==SO22F2+2NaOH==2NaF+OF2+H2OCl2+Na2S==2NaCl+S↓==Cl2+S2–S+H2SO4(浓)==3SO2↑+2H2OF2+2NaCl==2NaF+Cl2=2Cl–+S↓S+6HNO3(浓)==H2SO4+6NO2↑+2H2OF2+2NaBr==2NaF+Br2Cl2+H2S==2HCl+S↓==(水溶液中：S+4H++6NO3-==6NO2↑+2H2O+H2SO4F2+2NaI==2NaF+I2Cl2+H2S=2H++2Cl–+S↓3S+4HNO3(稀)==3SO2+4NO↑+2H2O7F2(过量)+I2==2IF7Cl2+SO2+2H2O==H2SO4+2HCl3S+4H++4==3SO2+4NO↑+2H2OF2+Cl2(等体积)==2ClF==(ClF属于类卤Cl2+SO2+2H2O=4H++SO42–+2Cl–N2+O2==2NO素：ClF+H2O==HF+HClO==)Cl2+H2O2==2HCl+O2==Cl2+H2O2=2H++Cl4P+5O2==P4O10(常写成P2O5)3F2(过量)–+O22P+3X2==2PX3(X表示F2，Cl2，Br2)+Cl2==2ClF3==(ClF3+3H2O==3HF+HClO32O2+3Fe==Fe3O4==O2+K==KO2PX3+X2==PX5==)S+H2==H2S==2S+C==CS2==S+Zn==ZnSP4+20HNO3(浓)==4H3PO4+20NO2↑+4H2OCl2+H2==2HCl==(将H2在Cl2点燃;混S+Fe==FeS==(既能由单质制取，又能由C+2F2==CF4合点燃、加热、光照发生爆炸)离子制取)C+2Cl2==CCl43Cl2+2P==2PCl3==Cl2+PCl3==PCl5==ClS+2Cu==Cu2S==(只能由单质制取，不能C+O2(足量)==CO22+2Na==2NaCl由离子制取)2C+O2(少量)==2CO3Cl2+2Fe==2FeCl3==Cl2+Cu==CuCl23S+2Al==Al2S3==(只能由单质制取，不C+CO2==2CO能由离子制取)C+H2O==CO+H2(生成水煤气)..2C+SiO2==Si+2CO(制得粗硅)二.金属单质(Na,Mg,Al,Fe,Cu)的还原4Al+3MnO2==2Al2O3+3Mn==2Al+Cr2O3==Si(粗)+2Cl2==SiCl4性Al2O3+2Cr==(铝热反应)(SiCl4+2H2==Si(纯)+4HCl)2Na+H2==2NaH==4Na+O2==2Na2O==2Na2O2Al+Fe2O3==Al2O3+2Fe==2Al+3FeO==AlSi(粉)+O2==SiO2+O2==2Na2O22O3+3FeSi+C==SiC(金刚砂)2Na+O2==Na2O2==2Na+S==Na2S(爆炸)2Al+6HCl==2AlCl3+3H2↑==2Al+6H+=2ASi+2NaOH+H2O==Na2SiO3+2H2↑==(Si+22Na+2H2O==2NaOH+H2↑==2Na+2H2O=2Nal3++3H2↑OH==+H2O===+2H2↑)++2OH―+H2↑2Al+3H2SO4==Al2(SO4)3+3H2↑==2Al+63、歧化反应2Na+