摘要
以'二氧化碳相对分子质量的测定'为例,分析了传统实验中存在的试剂用量大、'三废'排放多等问题,以绿色化学为突破口,采用氢氧化钠-酚酞溶液替代火柴进行验纯,使用注射器代替碘量瓶集气,通过上述方法对实验进行优化设计,达到了绿色化、准零排放的要求,可以增强学生的环保意识。
The following problems in traditional experiments of determination of CO2 molecular weight are analyzed,for instance,too much reagent consumption and'three wastes'emissions.Based on green chemistry principle some optimizing schemes,such as purity test with mixed solution of sodium hydroxide and phenolphthalein instead of matches,and gathering gas in injector instead of iodine flask were proposed.The improved experiment meets the requirmends of green chemistry and can make students understand the importance of the ecological environment.
作者
周贤亚
郑蕾
黄磊
杨丽
聂丽
秦兴兴
汪颖
魏润峰
ZHOU Xian-Ya;ZHENG Lei;HUANG Lei;YANG Li;NIE Li;QIN Xing-Xing;WANG Ying;WEI Run-Feng(The Experimental Training and Teaching Management Department,West Anhui University,Liu’an 237012,China)
出处
《化学教育（中英文）》
CAS
北大核心
2019年第18期33-35,共3页
Chinese Journal of Chemical Education
基金
安徽省质量工程项目(2017zhkt455)
关键词
绿色化学
实验改进
二氧化碳
相对分子质量测定
green chemistry
improvement in the experiment
carbon dioxide
determination of relative molecular mass
