单质怎么区分酸碱盐

2025-03-30 15:26:34
推荐回答(4个)
回答1:

电离时生成的阳离子全部是氢离子(H+)的化合物叫做酸。在水溶液中电离出的阴离子全部是氢氧根离子的化合物叫做碱。酸跟碱完全中和生成的盐中,不会有酸中的氢离子,也不会有碱中的氢氧根离子,只有金属阳离子和酸根离于,这样的盐为正盐。
酸跟碱反应时,若酸中的氢离子部分被中和,生成的盐中除了金属阳离子和酸根离子外,还有氢离子存在,这样的盐为酸式盐。酸跟碱反应时,弱碱中的氢氧根离子部分被中和,生成的盐为碱式盐。
复盐:由不同金属离子(包括铵根离子)和酸根离子构成PS:弱酸是在水溶液中只能小部分电离的酸类。具有弱的酸性(反应)。弱碱是碱溶于水只能发生小部分电离的碱。
弱酸和弱碱电离可逆。

回答2:

酸碱盐必须是化合物,单质既不是酸,也不是碱和盐。酸碱盐不一定要有铵根,但是有铵根的一般来说都是盐,我们称之为铵盐,比如硫酸铵、氯化铵

回答3:

酸碱盐不一定要有铵根,但是有铵根的一般来说都是盐,我们称之为铵盐,比如硫酸铵、氯化铵

回答4:

你是问怎么区分酸碱性么?酸碱盐本身是化合物啊。酸碱盐当中不一定有铵根离子,是不是我没理解你的表述。能再说详细点么?

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