写出下列反应的离子反应方程式1.4AL+302=2AL2O32.AL2O3+3H2O=2AL(OH)3(有无沉淀?)3.AL(0H)3+3HCL=ALCL3+3H2O4.2AL+6HCL=2ALCL3+3H25.AL2O3+2NAOH=2NAALO2+H2O6.2AL+2NAOH+2H2O=2NAALO2

问题描述:

写出下列反应的离子反应方程式
1.4AL+302=2AL2O3
2.AL2O3+3H2O=2AL(OH)3(有无沉淀?)
3.AL(0H)3+3HCL=ALCL3+3H2O
4.2AL+6HCL=2ALCL3+3H2
5.AL2O3+2NAOH=2NAALO2+H2O
6.2AL+2NAOH+2H2O=2NAALO2

1`非离子反应
2`(似乎没这样得反应,至少实际操作很难,只见过2AL(OH)3=AL2O3+3H2O,条件是加热)
即使有,是离子反应,但水和AL(OH)3是弱电解质,不拆
3`AL(0H)3+3H+=AL3+ +3H2O
4.2AL+6H+=2AL3+ +3H2
5.AL2O3+2OH- =2ALO2- +H2O
6.2AL+2OH- +2H2O=2ALO2 -