在文献中,我们已阐述了键极性诱导指数(PIIB)的概念及计算方法。还讨论过化合物的许多性质与 PIIB 存在着定量关系,本文将主要阐述 PIIB 与某些化合物酸性的定量关系。计算结果表明,一元和二元(取代)脂肪酸等各种有机酸的酸性与其 PIIB值具有良好的相关性。 In the literature, we have elucidated the concept and calculation of bond-induced polarity index (PIIB). We also discussed that many properties of compounds have a quantitative relationship with PIIBs. In this paper, we will mainly discuss the quantitative relationship between PIIBs and the acidity of some compounds. The calculated results show that there is a good correlation between the acidity of various organic acids such as mono- and dibasic (substituted) fatty acids and their PIIB values.