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本文提出一个改进的饱和液体状态方程: V_(ri)~(sl)=exp{-(1.2310+0.8777ζ)[1+(1-T_r)~(2/7)]} 它是液体的对比体积与对比温度和构形因子的关联式。该方程在实验的误差范围内对本文收集的40种物质,其中包括强极性的丙酮、醇类、羧酸和腈类等都是适合的。将本方程和Rackett方程对这40种物质饱和体积进行计算和比较,结果表明本方程具有更高的精度,其总的平均绝对误差为0.58％,而最大误差为2.7％。
In this paper, we propose an improved equation of saturated liquid state: V ri ri ~ exp = - 1.2310 + 0.8777ζ [1+ (1-T_r) ~ (2/7)]} It is the contrast volume of the liquid Correlation with contrasting temperature and form factor. This equation is suitable for the 40 substances collected in this paper, including strongly polar acetone, alcohols, carboxylic acids and nitriles, within the experimental error range. This equation and Rackett equation are used to calculate and compare the saturation volumes of the 40 species. The results show that the equation has higher accuracy with a total average absolute error of 0.58% and a maximum error of 2.7%.