Acta Phys. -Chim. Sin. ›› 1985, Vol. 1 ›› Issue (06): 543-546.doi: 10.3866/PKU.WHXB19850607

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SUBLIMATION CALORIMETER AND THE MEASUREMENT OF ENTHALPIES OF VAPORIZATION AND SUBLIMATION OF TRICHLOROBENZENES

Yan Haike; Gu Jiangou; Hu Rihen   

  1. Chemical Thermodynamic and Thermochemical Laboratory Institute of Chemistry, Academia Sinica, Beijing
  • Received:1985-04-03 Revised:1985-06-29 Published:1985-12-15

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Abstract: A sublimation calorimeter has been constructed in our laboratory for solid compounds in pressure range≥0.1 mmHg at 298.15 K. Using this calorimeter and LKB 8700 vaporization calorimeter, the enthalpies of vaporization, ΔH, or the enthalpies of sublimation, ΔH_(sub), of trichorohenzens were measured to be;
Compound ΔH(kJmol)~(-1) ΔH_(sub)(kJmol~(-1))
Water 43.72±0.18
n-Decane 51.21±0.25
Naphthalene 73.26±0.92
1,2,3-Trichlorobenzene 75.14±0.75
1,2,4-Trichlorobenzene 55.06±0.50
1,3,5-Trichlorobenzene 72.68±0.50