Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (03): 421-423.doi: 10.3866/PKU.WHXB19930325

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Vapour Pressure of n-Heptane-n-Octane and n-Octane-iso-Octane Binary Mixtures

Han Bu-Xing; Yan Hai-Ke; Hu Ri-Heng   

  1. Institute of Chemistry, Academia Sinica, Beijing 100080
  • Received:1991-12-21 Revised:1992-07-17 Published:1993-06-15
  • Contact: Han Bu-Xing

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Abstract: Vapour pressures of n-heptaae-n-octane and n-octane-iso-octane(2,2,4-trimethyl-pentane) binary systems have been determined at 20.0 ℃, 39.6 ℃ and 55.0 ℃. These two systems are nearly ideal solutions at lower temperatures. But they show small positive deviation from Raoult's law at higher temperatures.

Key words: n-Heptane-n-Octane, n-Octane-iso-Octane, Vapour pressure