在酸碱滴定中,确定滴定终点一般采用指示剂法、“S”形曲线法和直线图解法。前两种方法作为常用的方法,简便易行,但仅适用于具有pH突跃的各种酸碱滴定;而直线图解法虽然适用于极弱酸的滴定,但又需要经过比较复杂的计算和作图,才能求得结果,同样也不便于实际应用。我们采用了微机直接计算法,测算结果无论在准确、快速和简便等方面均取得了较为满意的效果。 In acid-base titration, the endpoint of titration is usually determined by the indicator method, the “S” curve method and the line graph method. The first two methods as a common method, simple and easy, but only for a pH jump with a variety of acid-base titration; while the linear diagram solution is suitable for very weak acid titration, but also need to go through more complicated calculations and for Figure, to find the result, the same is not convenient for practical use. We adopted the computer direct calculation method, the calculation results have achieved satisfactory results in terms of accuracy, speed and simplicity.