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在分析化学实验教学中,安排pH滴定的实验,有助于学生加深对酸碱滴定理论的理解。我们曾在分析化学实验教学中安排了pH滴定和缓冲容量的实验,但是数据处理较繁琐。为此,我们在原有实验的基础上设计了一种酸碱滴定的综合实验和计算程序。通过本实验希望达到以下目的:(1)熟悉pH计的使用方法;(2)了解滴定的基本原理,并掌握用一级差商和二级差商法确定终点的方法;(3)对缓冲容量的有关理论进行验证;(4)运用计算机处理实验结果等。
In the analytical chemistry experiment teaching, arrange the experiment of pH titration, help the student to deepen the understanding to acid-base titration theory. We have experimented with pH titration and buffer capacity in our Analytical Chemistry lab, but the data processing is cumbersome. To this end, we have designed a comprehensive experiment and calculation program of acid-base titration on the basis of the original experiment. The purpose of this experiment is to achieve the following: (1) familiar with the use of pH meter; (2) to understand the basic principles of titration, and to grasp with first-degree difference and second-degree difference method to determine the endpoint method; (3) on the buffer capacity Theory to verify; (4) the use of computer processing experimental results.