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Thermodynamics of liquid (nitrogen  +  ethane)

✍ Scribed by Henrique J.R Guedes; John A Zollweg; Eduardo J.M Filipe; Luı́s F.G Martins; Jorge C.G Calado

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
101 KB
Volume
34
Category
Article
ISSN
0021-9614

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✦ Synopsis

The equilibrium vapour pressure of liquid {xN 2 + (1 -x)C 2 H 6 }(l) has been measured at T = 90.69 K. The excess molar Gibbs energies G E m have been calculated as a function of composition from the vapour pressure data. For the equimolar mixture

Excess molar enthalpies H E m have also been measured at T = (92.1 ± 0.1) K and p = (0.79 ± 0.12) MPa using a low-temperature computer-interfaced high-pressure flow calorimeter. For the equimolar mixture H E m (x = 0.5) = 426.9 J • mol -1 . The results show that the system is only partially miscible at both temperatures. The limits of (liquid + liquid) immiscibility have been determined as 0.123 ± 0.010 < x < 0.958 ± 0.004. The results have been interpreted using the Deiters equation of state.

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