摘要
燃烧热测定实验是普通高校基础物理化学实验中的一个经典实验。针对燃烧热测定实验中存在的燃烧成功率较低、实验误差较大的问题,从压片技术、实验装置、内桶位置、氧弹底座和点火线连结方式等五方面进行了改进。改进后,其燃烧成功率可达96%,萘的测定相对误差为0.20%,提高了实验效率,取得了良好的教学效果。
The combustion heat measurement experiment is a classical experiment in basic physical chemistry experiment in colleges and universities.In order to solve the problems of low success rate of combustion and large experimental error in the experiment of combustion heat measurement,five improvements were made from five aspects,such as tablet pressing technology,experimental equipment,position of inner barrel,oxygen bomb base and connection mode of ignition wire.After the improvement,the combustion success rate can reach 96%,and the relative error of naphthalene determination is 0.20%,which improves the experimental efficiency and achieves good teaching effect.
作者
罗伟强
曹琴
袁利娟
陈春姨
张驰
Luo Weiqiang;Cao Qin;Yuan Lijuan;Chen Chunyi;Zhang Chi(Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Nanning 530006;Sichuan Linshui Experimental School,Linshui 638500,China)
出处
《广东化工》
CAS
2020年第19期170-170,175,共2页
Guangdong Chemical Industry
基金
广西民族大学校级教学改革工程项目(2016XJGY31),广西民族大学自治区级大学生创新创业训练计划项目(201910608182),广西民族大学校级研究生教育创新计划项目(gxun-chxzs2018064,gxun-chxps201774),广西高等教育本科教学改革工程项目(2020JGZ115)。
关键词
物理化学实验
燃烧热
测定
仪器改进
physical chemistry experiment
combustion heat
determination
instrument to improve
