离子浓度的比较是高考化学中的一个重要考点,在历年高考中均占有一定的比例,同时也是高中学习和教学的一个难点,比较离子浓度的方法多种多样,总体有三个重要思想。1.弱电解质的电离是很微弱的,多元弱酸的第一步电离远大于第二步。如CH_3COOH,在常温时0.1 mol·LCH_3COOH溶液中,其电离的CH_3COOH占初始CH_3COOH的比例 Comparison of ion concentration is an important test center in college entrance examination, college entrance examination in the calendar year occupy a certain percentage, but also a high school learning and teaching a difficult comparison of ion concentration methods varied, there are three important ideas. 1. Weak electrolyte ionization is very weak, multi-weak ionization of the first step ionization is far greater than the second step. Such as CH_3COOH, at room temperature in 0.1 mol·LCH_3COOH solution, the ionization of CH_3COOH ratio of the initial CH_3COOH