【摘要】 本文根据模糊集合理论对9种酸碱指示剂作了研究,提出指示剂变色范围宽度和变色转折半宽度的新概念,测定了9种指示剂在不同浓度下的变色转折点和变色转折半宽度。实验结果说明,与经典指示剂理论不同,即使是双色指示剂其变色区间也受指示剂浓度的影响。更多还原

【Abstract】 The 9 acid-base indicators have been studied with a computer on the basis of FuzzySet Theory in this paper.The 9 indicators consist of bromphenol blue,bromcresol greenbromthymol blue,cresol red,phenol red,thymolphthalein,methyl orange,methylred,phenolphthalein.The turning interval of indicator colour change for these indicatorsin 80,160.320 ppm has been determined.It is different from classic indicacor theory thatthe colour change interval of the indicators varies with the indicator concentration evenfor the two colour indicator.更多还原