摘要
用脉冲回波自动声速代测量了乙醇－水二元混合液在温度为５～５５℃范围的声速与浓度关系，超声波溶液浓度测量的基本原理即基于这种声速－浓度关系．文中还计算了该溶液的绝热压缩系数、分子间自由程、超额摩尔体积、超额声速、超额绝热压缩系数及超额分子间自由程等参数；并讨论了溶液中分子间相互作用的特性．
Concentration dependence of ultrasonic velocity for the binary mixture system ethyl alcohol-water has been determined in the temperature range 5-55℃ using an automatic pulse-echo velocimeter. The principle of ultrasonic solution concentration determination is based on this dependence.Other parameters,such as adiabatic compressibility, intermolecular free length, excess molar volume,excess ultrasonic velocity, excess adiabatic compressibility and excess intermolecular free length have been computed in this paper. The extent and nature of molecular interaction among the solutiuons are discussed.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
1996年第2期183-188,共6页
Journal of Tongji University:Natural Science
基金
国家教委博士点基金
关键词
乙醇水溶液
声速
浓度
热力学
分子
相互作用
Ultrasonic velocity
Aqueous solution of ethyl alcohol
Concentration: Thermodynamic property: Molecular interaction
