A modified equation for calculating evaporation heat of liquids;

Structure selectivity of 39 alkanes from C_2 to C_8 is discussed and their boiling point and evaporation heat are related with the topological index M,which helps to the forecast the boiling point and evaporation heat with M.

Experimental instrument about liquid vaporization heat using electric heating method

In this paper,based on the graph theory method,an equation was proposed for the prediction of vaporization heat of alkenes at normal boiling point.

A new method for calculating the critical constants from the data of liquid density and vaporization heat at normal boiling point is presented in this paper,The method is discussed on the base of the results obtained by esti- mating the Pc and Tc values of nearly 100 kinds of representative organic matters and shows its reliability and stability.

Based on the thermodynamic theory of thermal pressure, the general equa tions for vaporization-heat of pure substances was derived, and then used to calculate the vaporization- heat data for thirty-two substances, including some strongly polar compounds, such as methanol, ethanol and ethylic acid etc.

Based on the thermodynamic theory of thermal pressure, the equations for vaporization-heat of pure substances were derived, and then used to calculate the vaporization-heat data for thirty-two substances including some strongly polar compounds, such as, methand, ethanol and acetic acid etc.