Abstract
Measurements of the vapor-liquid relationship for E. H. P.-mT. C. P. system were performed by use of an agitator vessel under a residual air pressure less than 1.5×10-3mmHg. The results areas follows: (l) On molecular distillation, there are vapor-liquid relationships for each operation liquid surface temperature (Ts). (2) At low liquid surface temperature, E. H. P.-mT. C. P. system behaves as an ideal solution, but deviates at high liquid surface temperature. (3) In composition range 2O mol % to 8O mol %, the change in the ratio of aob/ath to × is approximately shown as a quadratic equation: aob/ath=b-a(×- 0.5)2. a is the constant value for the same system, b is shown as an equation of the first degree of Ts. The empirical formula derived in this work, shows agreement with the observed values in composition range 2O mole % to 8O mole%.
