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一、利用铝三角复习Ａｌ３＋、Ａｌ（ＯＨ）３、ＡｌＯ－２的转化关系①Ａｌ３＋→Ａｌ（ＯＨ）３Ⅰ．加入一定量的强碱溶液，Ａｌ３＋＋３ＯＨ－＝Ａｌ（ＯＨ）３↓Ⅱ．加入足量的氨水Ａｌ３＋＋３ＮＨ３·Ｈ２Ｏ＝Ａｌ（ＯＨ）３＋３ＮＨ＋４Ⅲ．加入某些强碱弱酸盐溶液...
First, the use of the aluminum triangle review Al3 +, Al (OH) 3, AlO-2 conversion relationship ① Al3 + → Al (OH) 3 Ⅰ. Add a certain amount of alkali solution, Al3 + +3 OH- = Al (OH) 3 ↓ Ⅱ. Add sufficient amount of aqueous ammonia Al3 + +3 NH3 H2O = Al (OH) 3 +3 NH +4 III. Add some strong alkali weak acid salt solution ...