摘要
纯液体的饱和蒸气压是液体物质一个重要热力学参数,对其测量方法的研究具有重要的科学意义。本文设计了一种操作简单的纯液体饱和蒸汽压测定的实验装置,利用该装置我们测定了20℃、25℃、30℃下的环已烷、异丙醇及蒸馏水的饱和蒸汽压值。实验结果表明,测定的实验值与已有的文献值相对误差均在6%以内,测量精度较高。环已烷、异丙醇及蒸馏水饱和蒸气压值的精确测量证明我们设计的测定液体饱和蒸气压值的实验装置具有很好的可靠性。
The saturated vapor pressure of pure liquid is an important thermodynamic parameter of liquid substance.It is of great scientific significance to study its measurement method.In this paper,a simple experimental device for the determination of saturated vapor pressure of pure liquid is designed.With this device,the saturated vapor pressure values of cyclohexane,isopropanol and distilled water are measured at 20℃,25℃and 30℃.The experimental results show that the relative errors between the measured experimental values and the existing literature values are within 6%,and the measurement accuracy is high.The accurate measurement of saturated vapor pressure of cyclohexane,isopropyl alcohol and distilled water has proved the reliability of our experimental apparatus for the determination of saturated vapor pressure of liquid.
作者
罗骏
曾成露
王邦宇
徐萌
曹茂启
Luo Jun;Zeng Chenglu;Wang Bangyu;Xu Meng;Cao Maoqi(School of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000,China)
出处
《广东化工》
CAS
2022年第18期225-227,共3页
Guangdong Chemical Industry
基金
贵州省科技厅基础计划资助项目(黔科合基础[2019]1297号)。
关键词
饱和蒸汽压
纯液体
实验装置
saturated vapor pressure
pure liquid
experimental device
作者简介
罗骏(1974-),男,贵州惠水人,副教授,主要从事计算化学研究;通讯作者:曹茂启(1986-),男,河南民权人,博士研究生、教授,主要从事催化材料的实验和理论研究。
