摘要
本文分析了SWC-LG凝固点实验装置测定摩尔质量实验中存在的三方面问题:实验体系环境不友好、寒剂温度控制困难、人工数据采集处理.提出以下改进方法:采用水做溶剂的测定体系、低温恒温槽控制温度以及数据采集处理自动化.通过改进可以使该实验成为绿色环保、实验测量准确的本科教学实验.
Molar mass is experimentally determined by SWC-LG freezing point experimental apparatus. Three problems are analyzed in this paper：experimental system unfriendly environmen,difficulty in control of cold refrigerant temperature,manual data acquisition and processing. The following improved methods are presented：using water as a solvent system,temperature control with low temperature thermostat bath,and automation of data acquisition and processing. With these improvements,the experiment can become green and accurate experiment for undergraduate.
作者
周新丽
李维杰
ZHOU Xin-li LI Wei-jie(School of Medical Instrument and Food Engineering,The University of Shanghai for Science and Technology,Shanghai 200093,Chin)
出处
《教育教学论坛》
2017年第2期267-268,共2页
Education And Teaching Forum
关键词
凝固点降低
摩尔质量
实验改进
freezing point depression
molar mass
experiment improvement
