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饱和次氯酸钠ph为什么约为11

更新时间: 2020-10-29 00:00:00     

次氯酸钠的OH-几乎都是次氯酸根水解而来,加水稀释可以加大次氯酸根的水解程度,但较其浓度的下降程度小的多。加水稀释越多PH越接近7,可以用次氯酸根的水解常数定量计算。即使温度升高,次氯酸根水解加大,cOH-加大,但Kw变小程度更大,PH值依然会变小。

关键词: 饱和 次氯酸钠 ph 为什么

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