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["硫铵滴定酸度需必须用 0.525mol/Lの氢氧化钠吗?", "現在化验室说配标准液麻烦,要改浓度可以不?", "一般的强酸强碱的溶液都是先配制一个大致浓度的,然后再稀释成所用的准确浓度,这个浓度不上不下,不知道是作什么用。". " 0.525mol/Lの氢氧化钠溶液、約 1 110 ml水配 21g氢氧化钠"]

2019-06-05View Original

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现在化验室说配标准液麻烦,要改浓度可以不?
Reply #22019-06-07
一般强酸强碱的溶液都是先配制一个大致浓度的,然后再稀释成所用的准确浓度,这个浓度不上不下,不知道是作什么用。
Reply #32019-06-08
0.525mol/L氢氧化钠溶液,约1000ml水配21g氢氧化钠

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