✦ LIBER ✦

On the calculation of the second virial coefficients of pure compounds and mixtures

✍ Scribed by Alessandro Vetere

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 755 KB
Volume: 46
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(91)87025-8

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✦ Synopsis

A previous method for calculating the second virial coefficients of pure compounds and mixtures is revised. The two empirical constants of a semi-theoretical relation are related to the reduced second virial coefficient values of a pure compound calculated at the normal boiling temperature and at the critical temperature.

Rules are given for evaluating these parameters for several classes of compounds, including strongly polar molecules and associating compounds.

The only experimental data required in order to apply the proposed method are the normal boiling temperature and the critical constants T, and P,. The proposed method is extended also to the correlation and the prediction of the cross second virial coefficients of nearly 80 mixtures of both polar and non-polar compounds.

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