物理化学学报 >> 1987, Vol. 3 >> Issue (03): 326 -329 .doi: 10.3866/PKU.WHXB19870318

研究简报 上一篇    下一篇

苯和正己烷在盐甲醉溶液中的活度系数(298 K)

倪朝烁; 余廉; 刘瑞麟   

  1. 北京大学物理化学研究所
  • 收稿日期:1986-02-22 修回日期:1986-07-11 发布日期:1987-06-15

ACTIVITY COEFFICIENT OF BENZENE AND n-HEXANE IN METHANOL SALT SOLUTIONS AT 298 K

Ni Chaoshuo; Yu Lian; Liu Ruilin   

  1. Institute of Physical Chemistry; Peking University
  • Received:1986-02-22 Revised:1986-07-11 Published:1987-06-15

Abstract: The activity coefficients of benzene and n-hexane in solutions of LiCl, NaBr and NH_4Br in methanol were measured at 298.15±0.06 K. Thecomposition of binary mixture of benzene-methanol and n-hexane-methanol was constant at each experi- mental run. Benzene or n-hexane content in equilibrium gas phase was expressed by gas chromatography and the value of activity coefficient of the component was determined by the ratio of heights of chromatographic peaks. Experimental results show that the salting out effect of benzene in methanol is smaller than that of n-hexane and the salting in factor of n-hexane by lithium ion is smaller than that of benzene, thus the mechanism of salt modified solvent was discussed preliminarily.