物理化学学报 >> 1996, Vol. 12 >> Issue (03): 284-288.doi: 10.3866/PKU.WHXB19960319

研究简报 上一篇    

多羟基化合物水溶液渗透系数的测定

高作宁,文晓林,沈伟国,方键   

  1. 宁夏大学化学系,银川 750021|兰州大学化学系,兰州 730000
  • 收稿日期:1995-06-08 修回日期:1995-09-25 发布日期:1996-03-15
  • 通讯作者: 文晓林

Determination of the Osmotic Coefficients of the Aqueous Solution of Polyhydroxylated Compound at 313,323and 333K

Gao Zuo-Ning,Wen Xiao-Lin,Shen Wei-Guo,Fang Jian   

  1. Department of Chemistry,Ningxia University,Yinchuan 750021|Department of Chemistry,Lanzhou University,Lanzhou 730000
  • Received:1995-06-08 Revised:1995-09-25 Published:1996-03-15
  • Contact: Wen Xiao-Lin

关键词: 多羟基化合物, 水溶液渗透系数, VPO方法

Abstract:

The determination of the osmotic coefficients of the aqueous solution of polyhydroxylated compounds such as glycol, glycerol, sucrose and glucose by Vapour Pressure Osmometry at 313, 323 and 333K was carried out over the concentration range of 0.0-2.1mol﹒kg-1 and 0.0-2.0 mol﹒kg-1 respectively. By using a linear least-square fitting routine, the osmotic coefficients were fitted by a simple polynomial equation, It was found that the relation between the experimental results of molal osmotic coefficients Φ and the mass molal concentration of the solution m are in agreement with that from the polynomial fitting at different temperature. Factors which influence the osmotic coefficient such as the number of hydroxyl of polyhydroxylated compounds or the molecule weight of the solute molecules should be further studied, this work will also contribute to the studies of other thermodynamical properties of the aqueous solution of polyhydroxylated compound.

Key words: Polyhydroxylated compound, Osmotic coefficient of aqueous solution, Vapour presssure osmometry