Abstract
The recently developed approach to the description of the solubility of noble gases and nitrogen in liquids was extended to the consideration of factors determining the temperature dependence of the solubility of these gases. The agreement of the theory and experiment was confirmed by the literature data on the solubility of nitrogen at a partial pressure of 1.01325 · 105 Pa in hexane, heptane, octane, decane, and hexadecane, which as a whole have a very wide (231—475 K) temperature range of validity. Henry’s constant is proved not to be the true characteristic of gas affinity to liquids. The thermodynamic parameters obtained on the basis of the temperature dependence of Henry’s constant are referred to the sum of two processes: the transfer of gas particles from the intrinsic phase to cavities of the intermolecular volume of the liquid and the change in the total volume of the cavities due to the thermal expansion (compression) of the liquid.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 659–662, April, 2010.
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Mizerovsky, L.N., Smirnova, K.P. Temperature dependence of the solubility of nitrogen in n-alkanes at atmospheric pressure. Russ Chem Bull 59, 673–676 (2010). https://doi.org/10.1007/s11172-010-0145-9
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DOI: https://doi.org/10.1007/s11172-010-0145-9