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应用电子效应理论和分子轨道理论，分别从理论与数值，从宏观与微观两方面对硝基酚酸性的强弱作了较详细的分析和讨论，得到与实验测得的ｐＫａ值一致的结果。
Using electron effect theory and molecular orbital theory, we analyzed and discussed the nitrophenolic acid strength from the macroscopical and microscopic perspectives respectively from the theory and numerical values, and obtained the same results as the experimentally measured pKa values.