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题文

已知NH4++AlO2-+2H2O=Al(OH)3↓+NH3·H2O。向含有等物质的量的NH4Cl、AlCl3和HCl混合溶液中慢慢滴加NaOH溶液至过量,并不断搅拌,可能发生以下离子反应:
①H+OH=H2O;  ②Al(OH)3+OH=AlO2+2H2O;  ③Al3+3OH=Al(OH)3↓;
④NH4+OH=NH3·H2O;  ⑤NH4+AlO2+2H2O=Al(OH)3↓+NH3·H2O。
其正确的离子反应顺序是

A.①③②④ B.①③④② C.①③②⑤ D.①④③②
科目 化学   题型 选择题   难度 较难
知识点: 碳族元素简介
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