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盐水的沸点为什么比水高
更新时间: 2020-10-31 00:00:00  

盐水的沸点比水高是因为溶解了固体后,水的浓度降低,水的蒸汽压就降低,此时要使水的蒸汽压达到1个标准大气压,就需要提高温度来满足,所以水的沸点就升高。另外盐水的沸点随盐的浓度而变,浓度越大,沸点越高,在标准大气压下,盐水的沸点总是高于水,氯化钠很容易溶于水,同时分解成钠离子和氯离子,并且在液体的内部扩散开来。

关键词: 盐水 沸点 为什么

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