Equilibrium in complex systems

Using the group-contribution method of Andersen, Beyer, Watson, and 

Precision measurements of enthalpies of formation and entropies are probably accurate to perhaps 250 J mol and 0.8 J moF respectively. Show that either one of these uncertainties corresponds to a change of 10% in an equilibrium constant at 25°C. 

It has been suggested [14] that l,4-dicyano-2-butene might be prepared in the vapor phase from the reaction of cyanogen with butadiene. 

Parks and H. M. Huffman, The Free Energies of Some Organic Compounds, Reinhold, New York, 1932 J. W. Andersen, G. H. Beyer, and K. M. Watson, Natl. Petrol. News, Tech. Sec. 36, R476 (1944) D. W. Van Rrevelen and H. A. G. Chemiin, Chem. Eng. Sci. 1, 66 (1951) S. W. Benson, Thermochemical Kinetics, 2nd ed., John Wiley, New York, 1967 S. W. Benson and N. Cohen, in Computational Thermochemistry, K. K. Ikura and D. J. Fnirip eds., American Chemical Society, Washington, DC, 1998, Chapter 2. 

Cohen and S. W. Benson, in S. Patai and Z. Rappoport, eds. The Chemistry of Alkanes and Cycloalkanes, John Wiley Sons, New York, 1992. 

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DeCapitani, C., and Brown, T.H., 1987, The computation of chemical equilibrium in complex systems containing non-ideal solutions Geochim. Cosmochim. Acta., v. 51, pp. 2639-2652. 

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