摘要
为了解盐溶液电导率与浓度和温度的变化规律,利用FD-LCM-A液体电导率测量实验仪测量了常温下盐溶液(NaCl)电导率与浓度的关系,以及不同浓度盐溶液电导率随温度的变化关系。首先,测量了常温下(30℃)浓度0.244 2～2.442 mol/L的电导率;接着,测量了浓度0.122 1～2.930 mol/L的盐溶液的电导率随温度的变化关系。实验结果显示:在常温下,盐溶液在0.244 2～2.442 mol/L,电导率与浓度呈线性关系。不同浓度的盐溶液电导率随温度的变化关系是:0.244 2 mol/L以下浓度盐溶液的电导率几乎不受温度影响;0.244 2 mol/L以上浓度盐溶液的电导率随温度单调上升。
In order to find out the law between conductivity of salt solution and concentration and temperature,the rela-tionship between conductivity of salt solution and concentration and temperature was tested by using FD-LCM-A conduc-tivity experiment instrument.Firstly,the conductivities of salt solution at the concentrations from 0.244 2 mol/L to 2.442 mol/L were tested in a room temperature.Secondly,the relationship between conductivity of salt solution and temperature were tested with concentrations at the ran...
出处
《实验室研究与探索》
CAS
北大核心
2010年第5期39-42,共4页
Research and Exploration In Laboratory
基金
广东省高等教育教学改革工程资助项目(20070018)
关键词
盐溶液
电导率
浓度
温度
salt solution
conductivity
concentration
temperature
