2-2-4、离子反应的氧化还原反应练习.doc

2-2-4 离子反应的氧化还原反应练习1、KMnO4+Na2S+H2SO4：KMnO4+Na2SO3+H2SO4：KMnO4+FeSO4+H2SO4：KMnO4+HBr(浓)：KMnO4+HCl(浓)：2、K2Cr2O7+H2S+H2SO4：K2Cr2O7+SO2+H2SO4：K2Cr2O7+FeSO4+H2SO4：K2Cr2O7+HBr(浓)：K2Cr2O7+HCl(浓)：3、NaClO+H2S：NaClO+SO2+H2O：NaClO+FeSO4+H2SO4：NaClO+HBr：NaClO+HCl：4、NaClO3+H2S：NaClO3+SO2+H2O：NaClO3+FeSO4+H2SO4：NaClO3+HBr：NaClO3+HCl：5、Cl2+NaHS：Cl2+NaHSO3+H2O：Cl2+KI：Cl2+FeSO4：Cl2+NaBr：6、Br2+Na2S：Br2+Na2SO3+H2O：Br2+KI：Br2+FeSO4：7、Mg+ HNO3(稀)=Zn+ HNO3(浓)=S+ HNO3(浓)=HNO3(稀)+Na2S：HNO3(稀)+Na2SO3：HNO3(稀)+KI：HNO3(稀)+FeSO4：7、FeCl3+Na2S：FeCl3+Na2SO3+H2O：FeCl3+KI：9、I2+Na2S：I2+SO2+H2O：答案1、2MnO4+5S2+16H+=2Mn2+5S+8H2O2MnO4+5SO32+6H+=2Mn2+5SO42+3H2OMnO4+5Fe2+ +8H+=2Mn2+5Fe3+4H2O2MnO4+10Br+16H+=2Mn2+5Br2+8H2O2MnO4+10Cl+16H+=2Mn2+5Cl2+8H2O2、Cr2O72+3H2S+8H+=2Cr3+3S+7H2OCr2O72+3SO2+2H+=2Cr3+3SO42+H2OCr2O72+6Fe2+14H+=2Cr3+6Fe3+7H2OCr2O72+6Br+14H+=2Cr3+3Br2+7H2OCr2O72+6Cl+14H+=2Cr3+3Cl2+7H2O3、ClO+ H2S= Cl+S+H2OClO+SO2+H2O = Cl+ SO42+ 2H+ClO+ 2Fe2+ 2H+ = Cl+2Fe3+H2OClO+ 2Br+ 2H+ = Cl+ Br2+H2OClO+ Cl+ 2H+ = Cl2+H2O4、ClO3+ 3H2S= Cl+3S+3H2OClO3+3SO2+3H2O = Cl+ 3SO42+ 6H+ClO3+ 6Fe2+ 6H+ = Cl+6Fe3+3H2OClO3+ 6Br+ 6H+ = Cl+ 3Br2+3H2OClO3+ 5Cl+ 6H+ = 3Cl2+3H2O5、Cl2+HS=2Cl+S+ H+Cl2+HSO3+H2O =2Cl+ SO42+ 3H+Cl2+2I=2Cl+I2Cl2+ 2Fe2+ =2Cl+2Fe3+ Cl2+2Br=2Cl+ Br26、Br2+S2=2Br+SBr2+SO32+H2O =2Br+ SO42+ 2H+Br2+2I=2Br+ I2 Br2+ 2Fe2+ =2Br+2Fe3+7、3Mg +2NO3+ 8H+ =3Mg2+ +2NO+4H2OZn+2NO3+ 4H+=Zn2+ +2NO2+2H2OS+ 6NO3+ 4H+ = SO42+6NO2+2H2O3S2+2NO3+ 8H+ =3 S+2NO+4H2O3SO32+2NO3+ 2H+ =3SO42+2NO+H2O6 I+2NO3+ 8H+ =3I2+2NO+4H2O3Fe2+NO3+ 4H+ =3Fe3+NO+2H2O8、2Fe3+S2= 2Fe2+S2Fe3+ SO32+H2O = 2Fe2+ S