摘要
本文利用胺滴定法在H_0为+5.0～—8.2范围的环已烷溶液中观察吸附的哈迈特指示剂的颜色变化,选用PKa值不同的几种指示剂,测出不同酸强度下的酸量而作出酸强度分布曲线,探讨了其规律性。
The colour change of the Hammett Indicator adsorbed in the cydohexane solutions with Hoalues in the range of 5. 0-8. 2 was observed by means of the amine ?titration method. By usingHammett indicators with different PKa values, the distribution curves of the acid strength as the function of acid quantity were determined and the behaviour of the indicator is discussed.
