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High-pressure compressibility behavior of liquids referred to a pseudospinodal curve

✍ Scribed by Valentín García Baonza; Mercedes Cáceres; Javier Núñez

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
611 KB
Volume
228
Category
Article
ISSN
0009-2614

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✦ Synopsis

Some experimental studies indicate that the isothermal compressibility, un of molecular liquids follows a power law up to very high pressures along isothermal paths. We show here that the high-pressure behavior of urcan be characterized from surface tension and uT data measured at low pressures. Our method is based on a pseudospinodal hypothesis. Comparison with experimental is satisfactory up to very high pressures for different molecular liquids. The results are also studied in terms of the reduced bulk modulus, B. Our method reproduces adequately the intersections experimentally found for the isotherms of B versus molar volume of molecular liquids.

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