从Kirchhoff和Clapeyron方程式出发,以文献数据为依据,分别导出了计算碳氢化合物蒸汽压和汽化热的经验公式。所含参数仅为最易得到的标准沸点和分子量。用此方法计算了各类碳氢化合物在不同压力下的沸点和标准沸点下的汽化热。所得结果与文献数据相比,其误差以95％的概率分别落在0.0±1.0％和-0.3±4.1％的范围内。 Based on the Kirchhoff and Clapeyron equations, the empirical formulas for calculating the vapor pressure and the heat of vaporization of hydrocarbons were derived based on the literature data. The parameters contained are only the most readily available standard boiling points and molecular weights. Using this method, the boiling points of various types of hydrocarbons at different pressures and the heat of vaporization at the normal boiling point were calculated. The results obtained, compared with the literature data, fall within the range of 0.0 ± 1.0% and -0.3 ± 4.1%, respectively, with 95% probability.