关于Al的化学方程式.doc

铝三角涉及反应(1)2Al+2NaOH+2H2O===2NaAlO2+3H2(2)4Al+3O2===2Al2O3(条件:点燃)[2Al+Fe2O3===Al2O3+2Fe(条件:高温)](3)2Al2O3===4Al+3O2↑(条件:电解)(4)2Al+3Cl2===2AlCl3(条件:点燃)[2Al+6HCl===2AlCl3+3H2↑](5)Al2O3+2NaOH===2NaAlO2+H2O(6)Al2O3+6HCl===2AlCl3+3H2O(7)NaAlO2+HCl+H2O===NaCl+Al(OH)3↓(8)Al(OH)3+NaOH===NaAlO2+2H2O(9)2Al(OH)3===Al2O3+3H2O(条件:加热)(10)Al(OH)3+3HCl===AlCl3+3H2O(11)AlCl3+===Al(OH)3↓+3NH4Cl[AlCl3+3NaOH===Al(OH)3↓+3NaCl](12)NaAlO2+4HCl(过)===AlCl3+NaCl+2H2O(13)AlCl3+3NaAlO2+6H2O====4Al(OH)3↓+3NaCl(14)Al2(SO4)3+6NaHCO3====2Al(OH)3↓+3Na2SO4+6CO2↑(15)2NaAlO2+CO2(少量)+3H2O====2Al(OH)3↓+Na2CO3(16)NaAlO2+CO2(过量)+2H2O====Al(OH)3↓+NaHCO3离子方程式:1Al3++3OH-=Al(OH)3↓2Al(OH)3+3H+=Al3++3H2O3Al(OH)3+OH-=AlO2-+2H2O4AlO2-+H++H2O=Al(OH)3↓5Al3++4OH-=AlO2-+2H2O6AlO2-+4H+=Al3++2H2O2Al+3O2=2Al2O3点燃2Al+3Cl2=2AlCl3点燃2Al+3Br2=2AlBr32Al+2NaOH+2H2O=2NaAlO2+3H22Al+Fe2O3=Al2O3+2Fe高温4Al+3MnO2=2Al2O3+3Mn高温2Al+3H2SO4=Al2(SO4)2+3H22Al+6HCl=3AlCl3+3H24Al2O3=4Al+3O2通电Al2O3+3H2SO4=Al2(SO4)3+3H2OAl2O3+2NaOH=2NaAlO2+H2OAl(OH)3+3HCl=AlCl3+3H2OAl(OH)3+NaOH=NaAlO2+2H2OAl2(SO4)3+=2Al(OH)3+3(NH4)2SO42Al(OH)3=Al2O3+3H2OΔNaAlO2+CO2+2H2O=NaHCO3+Al(OH)3NaAlO2+4HCl=AlCl3+2H2ONaAlO2+HCl+H2O=NaCl+Al(OH)3NaAlO2+NaHCO3+H2O=Na2CO3+Al(OH)3AlCl3+3NaAlO2+6H2O=4Al(OH)3+3NaClAl2(SO4)3+6NaHCO3=2Al(OH)3+6CO2+H2O+3Na2SO4注:NaAlO2有的版本写为:Na[Al(OH)4];生成物有气体而反应物无气体的要标上气标。也很好改写,需注意的是Al2O3、Al、气体等难溶物不能拆成离子形式参考资料:部分修改自百度贴吧【铝三角】①AlCl3->Al(OH)3AlCl3+3N