lingzhong
第22楼2009/06/23
你们溶解度的概念是不对的。
它应该是依据BP或EP出具的报告,其概念应该是:
Solubility:
Statements on solubility given under the heading Characteristics are intended as information on the approximate solubility at a temperature between 15°C and 25°C, unless otherwise stated, and are not to be considered as official requirements.
Statements given under headings such as Solubility in ethanol express exact requirements and constitute part of the standards for the substances under which they occur.
The following table indicates the meanings of the terms used in statements of approximate solubilities.
lingzhong
第24楼2009/06/23
那么溶解度的做法就是:取1g被测物,加水至完全溶解,然后判断溶解度。
那么,此时是否就应该是刚好完全溶解?也就是水里的最大溶解量了吧??
按规定来讲,溶解度是没有浓度概念的,不过算一个浓度出来也不算错,但是也不能在水里出现两种溶解度的浓度啊?
我也不明白的说,但整体而言,我认为Solubility这个词不会有两种意思。
而且,在那个网站查到的数据仅Solubility出现三种表述:Solubility、water Solubility、Solubility in water,同时出现三种不同的数据:0.1g/mL、2500g/L、2.5 mg/L,这个太自相矛盾了!