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The iodine clock reaction is a classical chemical clock demonstration experiment to display chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886. [1] The iodine clock reaction exists in several variations, which each involve iodine species (iodide ion, free iodine, or iodate ion) and redox reagents in the presence of ...
Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is different from chemical thermodynamics , which deals with the direction in which a reaction occurs but in itself tells nothing about its rate.
Reaction progress kinetic analysis. In chemistry, reaction progress kinetic analysis (RPKA) is a subset of a broad range of kinetic techniques utilized to determine the rate laws of chemical reactions and to aid in elucidation of reaction mechanisms. While the concepts guiding reaction progress kinetic analysis are not new, the process was ...
Reaction kinetics in uniform supersonic flow (French: Cinétique de Réaction en Ecoulement Supersonique Uniforme, CRESU) is an experiment investigating chemical reactions taking place at very low temperatures. [1][2][3] The technique involves the expansion of a gas or mixture of gases through a de Laval nozzle from a high-pressure reservoir ...
Stopped-flow. Stopped-flow is an experimental technique for studying chemical reactions with a half time of the order of 1 ms, introduced by Britton Chance [1][2] and extended by Quentin Gibson [3] (Other techniques, such as the temperature-jump method, [4] are available for much faster processes.)
Enzyme kinetics is the study of the rates of enzyme-catalysed chemical reactions. In enzyme kinetics, the reaction rate is measured and the effects of varying the conditions of the reaction are investigated. Studying an enzyme's kinetics in this way can reveal the catalytic mechanism of this enzyme, its role in metabolism, how its activity is ...
Radical clock. In chemistry, a radical clock is a chemical compound that assists in the indirect methodology to determine the kinetics of a free-radical reaction. The radical-clock compound itself reacts at a known rate, which provides a calibration for determining the rate of another reaction. Many organic mechanisms involve intermediates that ...
Temperature jump. The temperature jump method is a technique used in chemical kinetics for the measurement of very rapid reaction rates. It is one of a class of chemical relaxation methods pioneered by the German physical chemist Manfred Eigen in the 1950s. In these methods, a reacting system initially at equilibrium is perturbed rapidly and ...