| HCl | NaOH |
Al | 2Al+6HCl=2AlCl3+3H2↑ 2Al+6H+=2Al3++3H2↑ | 2Al+2NaOH+2H2O=2NaAlO2+3H2↑ 2Al+2OH-+2H2O=2AlO2-+3H2↑ |
Al2O3 | Al2O3+6HCl=2AlCl3+3H2O Al2O3+6H+=2Al3++3H2O | Al2O3+2NaOH=2NaAlO2+H2O Al2O3+2OH-=2AlO2-+H2O |
Al(OH)3 | Al(OH)3+3HCl=AlCl3+3H2O Al(OH)3+3H+=Al3++3H2O | Al(OH)3+NaOH = NaAlO2+2H2O Al(OH)3+OH-= AlO2-+2H2O |