什么叫弱电解质举例说明弱电解质的电离平衡。
参考答案：
弱电解质是指在水溶液中只有部分电离为离子，溶液中还存在大量未电离的分子的物质。如弱酸和弱碱等都是弱电解质。
弱电解质的电离平衡：弱电解质的电离是一个可逆过程。溶液中未电离的电解质分子和电解质部分电离生成的离子处于平衡状态，这种状态叫做电离平衡。例如，醋酸的电离：
达到平衡时溶液中离子浓度不再发生变化。
| 用方框中所给单词的适当形式填空，每词限用一次(每空一词)。 | |
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