The origin and the meaning of the little p in pH.
The origin and the meaning of the little p in pH.
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DOI：
10.1016/s0968-0004(99)01517-0
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发表时间：
2000
影响因子：
13.8
通讯作者：
J. G. Nørby
中科院分区：
文献类型：
--
作者：
J. G. Nørby
通过公式（II）计算0的平均值，由于发现0与Cp无关，因此将平均值（0.3377）插入公式（II）中，得到公式（III）（见图2）。通过测量p，未知的H-离子浓度，Cp或10 p，现在可以确定。结论因此，似乎pH值中的小p仅仅是由于Sørensen在他最初解释电测法时任意选择两种溶液的字母p和q的结果（图3）。通过选择溶液q使H离子浓度为1，
37 value for 0 is calculated by equation (II), and as 0 is found to be independent of Cp, the average value (0.3377) is inserted into equation (II), resulting in equation (III)(see Fig. 2). By measurement of p, the unknown H-ion concentration, Cp or 10 p, can now be determined.Conclusion Thus, it seems that the little p in pH originates simply as a consequence of Sørensen’s arbitrary choice of the letters p and q for the two solutions in his initial explanation of the electrometric method (Fig. 3). By choosing solution q to have the H-ion concentration 1, the unknown