铝三角和铁三角
来源:学生作业帮 编辑:神马作文网作业帮 分类:化学作业 时间:2024/11/11 12:51:08
铝三角和铁三角
(1) 2Al + 2NaOH + 2H2O === 2NaAlO2 + 3H2(上升) (2) 4Al + 3O2 === 2Al2O3(条件:点燃) [2Al + Fe2O3 === Al2O3 + 2Fe(条件:高温)] (3) 2Al2O3 === 4Al + 3O2(上升)(条件:电解) (4) 2Al + 3Cl2 === 2AlCl3(条件:点燃) [2Al + 6HCl === 2AlCl3 + 3H2(上升)] (5) Al2O3 + 2NaOH === 2NaAlO2 + H2O (6) Al2O3 + 6HCl === 2AlCl3 + 3H2O (7) NaAlO2 + HCl + H2O === NaCl + Al(OH)3(沉淀) (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 + 3NH3.H2O === Al(OH)3(沉淀) + 3NH4Cl [AlCl3 + 3NaOH === Al(OH)3(沉淀) + 3NaCl] (12)NaAlO2 + HCl(过) === AlCl3 + NaCl + H2O