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The excess molar enthalpy and cross-term second virial coefficients of (nitrogen + propane) and (nitrogen + butane) fromT= 241.2 to 393.4 K)

✍ Scribed by C.J. Wormald; D.J. Hutchings; E.J. Lewis

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
328 KB
Volume
28
Category
Article
ISSN
0021-9614

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✦ Synopsis

Flow calorimetric measurements of the excess molar enthalpy H E m of {yN2+(1-y)C3H8}(g) at standard atmospheric pressure over the temperature range T=(241.2 to 393.4) K, and of {yN2+(1-y)C4H10}(g) made over the temperature range T=(283.4 to 393.5) K are reported. The measurements were analysed using the spherical core Kihara potential and values of the cross-term second virial coefficient B12 were obtained. The accuracy of the H E m measurements is 20.7 J•mol -1 , and the accuracy of the B12 values is no worse than 28 cm 3 •mol -1 . The H E m measurements on these mixtures are recommended as test systems for checking the performance of low-pressure gas mixing calorimeters. Empirical equations for H E m (y=0.5) over a range of temperature are given.

📜 SIMILAR VOLUMES

Second virial coefficients of benzene an
Second virial coefficients of benzene and cyclohexane from measurements of the excess molar enthalpy of (0.5N2+ 0.5C6H6) and (0.5N2+ 0.5C6H12) from 333.2 K to 433.2 K
✍ C.J. Wormald; E.J. Lewis; A.J. Terry 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 329 KB

Values of the second virial coefficient B of benzene and cyclohexane have been obtained from measurements of the excess molar enthalpy H E m of {yN2 + (1y)C6H6} and {yN2+(1-y)C6H12} measured at standard atmospheric pressure over the temperature range 333.2 to 433.2 K. In a hypothetical mixture of an