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An interesting feature of the vapour pressure curve

Srinivasan, K (2002) An interesting feature of the vapour pressure curve. In: Zeitschrift für Physikalische Chemie, 216 (12). 1379-1387 .

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Official URL: http://www.oldenbourg-link.com/doi/abs/10.1524/zpc...


There exists a maximum in the products of the saturation properties such as T(p(c) - p) and p(T-c - T) in the vapour-liquid coexistence region for all liquids. The magnitudes of those maxima on the reduced coordinate system provide an insight to the molecular complexity of the liquid. It is shown that the gradients of the vapour pressure curve at temperatures where those maxima occur are directly given by simple relations involving the reduced pressures and temperatures at that point. A linear relation between the maximum values of those products of the form [p(r)(1 - T-r)](max) = 0.2095 - 0.2415 [T-r(1 - p(r))](max) has been found based on a study of 55 liquids ranging from non-polar monatomic cryogenic liquids to polar high boiling point liquids.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Oldenbourg Wissenschaftsverlag.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Ms V Mangala
Date Deposited: 04 Aug 2011 05:41
Last Modified: 04 Aug 2011 05:41
URI: http://eprints.iisc.ac.in/id/eprint/38986

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