CAJ | 학술논문

根据液体等压热容的定义，在修正的Rackett方程的基础上，导出了无机化合物液体等压热容的关联式。利用该模型计算了14种无机物102个数据点的液体等压热容，计算值与实验值的总平均相对偏差为3.21%，计算准确性优于文献方法；该方法适用于各种无机化合物在不同温度下液体等压热容的估算；方法简单方便，根据摩尔质量、临界温度、临界压力、标准沸点、标准熔点和偏心因子等易查取的物性数据，不需要理想气体等压热容数据就可以直接估算该无机物液体不同温度下的等压热容。
근거액체등압열용적정의，재수정적Rackett방정적기출상，도출료무궤화합물액체등압열용적관련식。이용해모형계산료14충무궤물102개수거점적액체등압열용，계산치여실험치적총평균상대편차위3.21%，계산준학성우우문헌방법；해방법괄용우각충무궤화합물재불동온도하액체등압열용적고산；방법간단방편，근거마이질량、림계온도、림계압력、표준비점、표준용점화편심인자등역사취적물성수거，불수요이상기체등압열용수거취가이직접고산해무궤물액체불동온도하적등압열용。
Following the definition of liquid heat capacity at constant pressure and the revised Rackett equation, a new correlation model of liquid heat capacities at constant pressure for inorganic compounds was proposed. Heat capacities of 14 different liquid inorganic compounds with 102 data points at different temperatures were predicted. Compared to the literature data, the results show that the calculated data from the new model is consistent with an overall average relative deviation of 3.21%. The model is simple and convenient, which is applicable to prediction of the liquid heat capacities at constant pressure for inorganic compounds studied at different temperatures. By using some standard physical properties such as mole mass, critical temperature, critical pressure,normal boiling point, normal melting point and eccentric factor, the liquid heat capacities at constant pressure of the inorganic compounds at different temperatures can be predicted without the heat capacity at constant pressure of corresponding ideal gases.