by admin | Jun 5, 2015 | sem1
Grotthus-Draper law The Grotthus–Draper law (also called the Principle of Photochemical Activation) states that only that light which is absorbed by a system can bring about a photochemical change. Materials such as dyes and phosphors must be able to absorb...
by admin | Jun 5, 2015 | sem1
Laws of Photochemistry The study of chemical reactions, isomerizations and physical behavior that may occur under the influence of visible and/or ultraviolet light is called Photochemistry. Two fundamental principles are the foundation for understanding photochemical...
by admin | Jun 4, 2015 | sem1
Two component systems For binary mixtures of two chemically independent components, C = 2 so that F = 4 – P. In addition to temperature and pressure, the other degree of freedom is the composition of each phase, often expressed as mole fraction or mass fraction of one...
by admin | Jun 4, 2015 | sem1
Van ‘t Hoff isotherm The Gibbs free energy can change with the change of the temperature and pressure of the thermodynamic system. TheVan ‘t Hoff isotherm can be used to determine the Gibbs free energy for non-standard state reactions at a constant...
by admin | Jun 4, 2015 | sem1
Maxwell relations The Maxwell relations are statements of equality among the second derivatives of the thermodynamic potentials. They follow directly from the fact that the order of differentiation of an analytic function of two variables is irrelevant. If Φ is a...
by admin | Jun 4, 2015 | sem1
Clausius-Clapeyron Equation The Clausius–Clapeyron relation, named after Rudolf Clausius and Benoît Paul Émile Clapeyron, is a way of characterizing a discontinuous phase transition between two phases of matter of a single constituent. On a pressure–temperature (P–T)...
