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The group contribution method, as used in Benson's approach, relies on a database of predefined group contributions. These contributions are typically tabulated and can be found in various sources, including research articles and thermodynamic property databases.
Benson's method, developed by Sidney Benson and his colleagues, is a group contribution method used to estimate thermodynamic properties of organic compounds. The method involves breaking down a molecule into its constituent functional groups and assigning a set of predefined values to each group. These values, known as group contributions, are then used to estimate properties such as heat of formation, entropy, and heat capacity. calculos quimicos de benson pdf repack