两函数ΔH^V/RT_C和ΔZ^V在纯物质气液相变中具有比例性的研究

A discussion on the proportionality of △H^V/RTC and △Z^V functions in vapor - liquid phase transitoins for pure substances

Clapygron蒸气压方程是根据假设"数组为常数,而与温度无关"推导得来的。为了阐述以上给出的假设的理由,本文提出如下论点:"△HV／RTc和△ZV函数实际上是和温度有关,而它们之间却存在一个简单的比例关系,即△HV/RTc∝△ZV。1997年我们曾根据分子聚集理论导出气化热方程,Haggenmacher于1946年曾提出△ZV方程,上述两个方程表明,Clapeyron假设基本上是正确的。另外,本文还基于上述的比例规律导出一些有用的蒸气压方程和气化热方程。

As it is known, the Clapeyron vapor - pressure equation is deduced on the assumption that the groupis constant and independent of temperature. In order to explain reasons of assumption given above, this paper offers the following viewpoint: the △HV/RTC and△ZV functions which are acturally dependent on temperature, presents asimple proportionality relation between them, i.e. △HV/RTC ∝△ZV . In 1997, we deduced the equation of vaporization based on the theory of molecular aggregation. In addition, Haggenmacher (1946)Evidently, the above two equations show that the Clapeyron's assumption is essentially valid. Based on the above proportionality rule, some useful vapor - pressure and vaporization - heat equations are deduced in this paper.