四氯化碳二元溶液的过量体积和体积过量折射率

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。

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

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.