【摘要】 标准状态下烯烃、环烷烃和芳烃蒸发热的计算式可表示为:ΔH_v,298⁰=0.43438M+∑C_ij+∑mG_xj+∑lδ_y按式计算了260多个烷烃、烯烃、环烷烃和芳烃分子的蒸发热,计算值与实验值的平均误差小于1.1%。更多还原

【Abstract】 An equation,△H_v⁰,298=0.43438M+∑C_ij+∑mG_xj+∑1δ_y,is proposed for the prediction of thelatent heat of vaporization for hydrocarbons under standard state,in which M is molecular weight,C_ij,G_xjand δ_y are constants of a monocarbon group of saturated aliphatic carbon,a proper func-tional group and a characteristic structure in the molecule respectively,m and 1 are number of samefunctional group and number of same characteristic structure in the molecule respectively,subscriptsx and y are the species of functional group and structure separately.The latent heat of vaporizationof more than 260 hydrocarbons under standard condition are predicted.It requires only theknowledge of the structural formula of molecule.The results show good agreement between the ex-perimental data and the predicted values.更多还原