Abstract: The vapor heat capacities as a function of temperature at 101. 3kPa of three binary systems, acetone-chloroform, benzene - carbon tetrachloride and benzene-ethanol, were measured in a multicomponent vapor flow calorimeter constructed in this laboratory. The results show that the vapor heat capacities of acetone - chloroform are positive and those of benzene -ethanol are negative as compared with the linear additive values while the non-ideality of benzene - carbon tetrachloride system is very small. The effect of intermolecular forces on the vapor heat capacity was discussed.

摘要： 用自行建立的多组分气体流动热量计测定丙酮-氯仿、苯-四氯化碳和苯-乙醇3个二元体系于不同温度、不同组成时的常压汽相热容。实验结果表明,丙酮-氯仿体系的汽相热容相对于理想混合为正偏差,苯-乙醇体系为负偏差,而苯-四氯化碳体系的非理想性不明显。文中还讨论了汽相分子间相互作用对热容的影响