Details

Autor(en) / Beteiligte

• Oonk, Harry A.J.
• van der Linde, Peter R.
• Huinink, Jan
• Blok, Jacobus G.

Titel

Representation and assessment of vapour pressure data; a novel approach applied to crystalline 1-bromo-4-chlorobenzene, 1-chloro-4-iodobenzene, and 1-bromo-4-iodobenzene

Ist Teil von

• The Journal of chemical thermodynamics, 1998-07, Vol.30 (7), p.897-907

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

1998

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Vapour pressures as a function of temperature for the three isomorphous crystalline substances 1-bromo-4-chlorobenzene [CA 106-39-8], 1-chloro-4-iodobenzene [CA 637-87-6], and 1-bromo-4-iodobenzene [CA 589-87-7] were determined using a diaphragm manometer and torsion mass-loss effusion. An unconventional but simple method is used for the representation and the assessment of the experimental results. The method, which is illustrated with literature data sets on liquid water and crystallinetrans-diphenylethene, is physical in nature and at the same time reveals the quality of the experimental data in terms of random and systematic errors. The thermodynamic sublimation properties atT=298.15 K were evaluated, the results being: for 1-bromo-4-chlorobenzene, ΔcrgGm°=−9062 J·mol−1, ΔcrgHm°=69.34 kJ·mol−1, ΔcrgCp, m°=−67 J·K−1·mol−1; for 1-chloro-4-iodobenzene, ΔcrgGm°=−6309 J·mol−1, ΔcrgHm°=71.86 kJ·mol−1, ΔcrgCp, m°=−79 J·K−1·mol−1; and for 1-bromo-4-iodobenzene, ΔcrgGm°=−1497 J·mol−1, ΔcrgHm°=78.53 kJ·mol−1, ΔcrgCp, m°=−87 J·K−1·mol−1. The estimated uncertainties are 40 J·mol−1, 0.4 kJ·mol−1, and 25 J·K−1·mol−1in ΔcrgGm°, ΔcrgHm°, and ΔcrgCp, m°, respectively.