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导读:如果说定性分析需要科学设计实验方案的话,那么定量研究就需要准确测定实验数据,并能对这些数据进行科学处理了。从定性分析到定量研究,是科学探究的必然趋势,也是我们努力的方向。育才中学化学兴趣小组的同学在用氢氧化钡溶液和盐酸进行酸碱中和反应的实验时,向烧杯内的氢氧化钡溶液中加入一定量的稀盐酸后,发现忘记了滴加指示剂。为此,她们立即停止滴加稀盐酸,并对烧杯内溶液的溶质成分进行了如下探究。
REVIEW: If the qualitative analysis of the need for scientific design of experimental programs, then quantitative research on the need for accurate measurement of experimental data, and scientific processing of these data. From qualitative analysis to quantitative research, is the inevitable trend of scientific inquiry, but also our direction. Yucai high school chemistry interest group of students in the use of barium hydroxide solution and hydrochloric acid neutralization reaction experiments, to the barium hydroxide barium hydroxide solution by adding a certain amount of dilute hydrochloric acid and found forgotten dripping indicator. To this end, they immediately stop dropping dilute hydrochloric acid, and the beaker solution of the solute components were explored as follows.