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本文第Ⅰ部份(见本刊八五年第一期)详细讨论了一元酸碱的E～C～K_a关系,给出了有关公式的精确E～C～K_a关系式及使用条件判别式。其后,八六年二月河北师大范瑞溪同志亦用微分近似方法导出了基本相同的结论。[5]但范瑞溪同志的文章仅是近似推导,缺乏精确的E～C～K_a关系式。故本文第Ⅱ部份仍以与第Ⅰ部份相同的思路对其它酸碱体系溶液酸度近似计算公式进行精确推导,给出各公式的精确E～C～K_a关系式、使用条件近似判别式及有关曲线供大家参考。
The first part of this article (see the first issue of August 1985) discusses the relationship of E ~ C ~ K_a of monobasic acid and alkali in detail, and gives the exact E ~ C ~ K_a relationship formula and discriminant of using conditions. Later, in February 1986, Comrade Fan Ruixi from Hebei Normal University also derived the same conclusions by using the method of differential approximation. [5] However, Comrade Fan Ruixi’s article is only approximate deduction, the lack of accurate E ~ C ~ K_a relationship. Therefore, the second part of this article still with the same ideas with the first part of the acid-base solution of other acid-base approximation to accurately derive the formula gives the precise formula E ~ C ~ K_a relationship, the use of approximate discriminant and The curve for your reference.