文档介绍：高考化学方程式
1无机化学
一、非金属单质(F2,Cl2,O2,S,N2,P,C,Si,H)
1、氧化性:
F2+H2===2HF (阴暗处爆炸) F2+Xe(过量)==XeF2
2F2(过量)+Xe==XeF4 (XeF4是强氧化剂,能将Mn2+氧化为MnO4–)
nF2+2M===2MFn(M表示大部分金属) 2F2+2H2O===4HF+O2 (水是还原剂)
2F2+2NaOH===2NaF+OF2+H2O F2+2NaCl===2NaF+Cl2
F2+2NaBr===2NaF+Br2 F2+2NaI===2NaF+I2 7F2(过量)+I2===2IF7
F2+Cl2(等体积)===2ClF (ClF属于类卤素:ClF+H2O==HF+HClO )
3F2(过量)+Cl2===2ClF3 (ClF3+3H2O==3HF+HClO3 )
Cl2+H22HCl (将H2在Cl2点燃;混合点燃、加热、光照发生爆炸)
3Cl2+2P2PCl3 Cl2+PCl3PCl5 Cl2+2Na2NaCl
3Cl2+2Fe2FeCl3 Cl2+CuCuCl2
Cl2+2FeCl2===2FeCl3 (在水溶液中:Cl2+2Fe2+===2Fe3++3Cl)
Cl2+2NaBr===2NaCl+Br2 Cl2+2Br=2Cl+Br2
Cl2+2KI===2KCl+I2 Cl2+2I=2Cl+I2
3Cl2(过量)+2KI+3H2O===6HCl+KIO3 3Cl2+I–+3H2O=6H++6Cl–+IO3–
5Cl2+I2+6H2O===2HIO3+10HCl 5Cl2+I2+6H2O=10Cl–+IO3–+12H+
Cl2+Na2S===2NaCl+S↓ Cl2+S2–=2Cl–+S↓
Cl2+H2S===2HCl+S↓(水溶液中: Cl2+H2S=2H++2Cl–+S↓
Cl2+SO2+2H2O===H2SO4+2HCl
Cl2+SO2+2H2O=4H++SO42–+2Cl–
Cl2+H2O2===2HCl+O2 Cl2+H2O2=2H++Cl–+O2
2O2+3FeFe3O4 O2+K===KO2
S+H2H2S S2 S+ZnZnS
S+Fe FeS (既能由单质制取,又能由离子制取)
S+2CuCu2S (只能由单质制取,不能由离子制取)
3S+2AlAl2S3 (只能由单质制取,不能由离子制取)
N2+3H22NH3 N2+3MgMg3N2 N2+3CaCa3N2
N2+3BaBa3N2 N2+6Na2Na3N N2+6K2K3N
N2+6Rb2Rb3N N2+2Al2AlN
P4+6H24PH3 P+3NaNa3P 2P+3ZnZn3P2
H2+2Li2LiH
2、还原性
S+O2SO2 S+H2SO4(浓)3SO2↑+2H2O
S+6HNO3(浓)H2SO4+6NO2↑+2H2O S+4H++6==6NO2↑+2H2O+
3S+4HNO3(稀)3SO2+4NO↑+2H2O 3S+4H++43SO2+4NO↑+2H2O
N2+O2 2NO
4P+5O2P4O10(常写成P2O5)
2P+3X22PX3(X表示F2,Cl2,Br2) PX3+X2 PX5
P4+20HNO3(浓)4H3PO4+20NO2↑+4H2O
C+2F2CF4 C+l4
C+O2(足量)CO2 2C+O2(少量)2CO
C+CO22CO C+H2OCO+H2(生成水煤气)
2C+SiO2Si+2CO(制得粗硅)
Si(粗)+2Cl2SiCl4 (SiCl4+2H2===Si(纯)+4HCl)
Si(粉)+O2SiO2 Si+CSiC(金刚砂)
Si+2NaOH+H2O==Na2SiO3+2H2↑(Si+2OH+H2O=+2H2↑)
3、歧化反应
Cl2+H2O==HCl+HClO(加碱或光照促进歧化:(Cl2+H2OH++Cl–+HClO)
Cl2+2NaOH==NaCl+NaClO+H2O (Cl2+2OH–=Cl–+ClO–+H2O)
Cl2+2Ca(OH)2==CaCl2+Ca(ClO)2+2H2O (Cl2+2OH–=Cl–+ClO–+H2O)
3Cl2+6KOH(浓)5KCl+KClO3+3H2O (3Cl2+6OH–5Cl–+ClO3–+3H2O)
3S+6NaOH2Na2S+Na2SO3+3H2O (3S+6OH–2S2–+SO32–+3H2O)
4P+3KOH(浓)+3H2O==PH3↑+3KH2PO2 (4P+3OH–+3H2O==PH3↑+3H2PO2–)
11P+15CuS