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怎样判断某酸是几元酸
更新时间: 2020-09-21 00:00:00  

用酸碱中和法,用该酸与已知的碱反应,在试验中要加入酸碱指示剂,以便观察现象。然后就可以计算出是多少元酸了;比如该酸与氢氧化钠反应,计量数之比为n比1,那该酸就是n元酸。至于数氢离子的方法是错误的,如果该酸是弱酸在水中只是部分电离,所以数氢离子这个方法不能行。

关键词: 怎样 判断

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