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Enthalpy–entropy Compensation
In thermodynamics, enthalpy–entropy compensation is a specific example of the compensation effect. The compensation effect refers to the behavior of a series of closely related chemical reactions (e.g., reactants in different solvents or reactants differing only in a single substituent), which exhibit a linear relationship between one of the following chemical kinetics, kinetic or thermodynamic parameters for describing the reactions: # Between the logarithm of the pre-exponential factors (or prefactors) and the Activation energy, activation energies \ln A_i = \alpha + \frac where the series of closely related reactions are indicated by the Indexed family, index , are the preexponential factors, are the activation energies, is the gas constant, and , are constants. # Between Activation enthalpy, enthalpies and Entropy of activation, entropies of activation (enthalpy–entropy compensation) \Delta H^\ddagger_i = \alpha + \beta \Delta S^\ddagger_i where are the enthalpies of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermodynamics
Thermodynamics is a branch of physics that deals with heat, Work (thermodynamics), work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of thermodynamics, which convey a quantitative description using measurable macroscopic physical quantity, physical quantities but may be explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to various topics in science and engineering, especially physical chemistry, biochemistry, chemical engineering, and mechanical engineering, as well as other complex fields such as meteorology. Historically, thermodynamics developed out of a desire to increase the thermodynamic efficiency, efficiency of early steam engines, particularly through the work of French physicist Nicolas Léonard Sadi Carnot, Sadi Carnot (1824) who believed that engine efficiency was the key that could help France win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
