物理化学学报 >> 1989, Vol. 5 >> Issue (03): 299-304.doi: 10.3866/PKU.WHXB19890310

研究论文 上一篇    下一篇

四氯化碳二元溶液的过量体积和体积过量折射率

车冠全; 易玉萍; 刘兆强   

  1. 兰州大学化学系
  • 收稿日期:1987-10-09 修回日期:1988-05-16 发布日期:1989-06-15
  • 通讯作者: 车冠全

EXCESS VOLUMES AND VOLUME EXCESS REFRACTIVE INDEXES OF BINARY MIXTURES CONTAINING TETRACHLOROMETHANE

Che Guanquan*; Yi Yuping; Liu Zhaoqiang   

  1. Department of Chemistry; Lanzhou University; Lanzhou
  • Received:1987-10-09 Revised:1988-05-16 Published:1989-06-15
  • Contact: Che Guanquan

摘要: 测定了四氯化碳分别与N-甲基吡略烷酮环戊酮、吡啶、2-丁酮、1-戊醇、异丙醇、甲基环己烷构成的二元溶液在293.15、298.15K的过量体积和体积过量折射率。提出了一个过量体积和体积过量折射率的关联公式。

Abstract:

The excess volumes and volume excess refractive indexes have been measured over entire composition range at 293.15 and 298.15K for tetrachloromethane+1-methyl-2-,pyrrolidinone, +cyclopentanone, +pyridine, +2-butanone, +1-pentanol, + 2-propanol, or+methylcyclohexane. The results show that V_E for CCl_4+C_5H_9NO, +C_5H_8O, + C_5H_5N are large negative value. It is attributed to a chargetransfer interaction between tetrachloromethane and the second components. The excess volumes for (CCl_4+C_5H_9NO) are the largest negative, its minimum value is -1.19 cm~3.mol~(-1) at 298.15 K. The V~E for CCl_4+(CH_3)_2CHOH, +C_5H_(11)OH are positive or slight negative, suggesting that there is not the specific interaction between tetrachloromethane and alcohol molecules.
We propose a semi-empirical formula for predicting excess volume of binary mixtures on volume excess refractive index. The resnlts are satisfactory.