The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example, the oxidation of iron under the atmosphere is a slow reaction that can take many years, but the combustion of butane in a fire is a reaction that takes place in fractions of a second.
Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts of chemical kinetics are applied in many disciplines, such as chemical engineering, enzymology and environmental engineering.
Other articles related to "reaction rate, reactions, reaction rates, rate, reaction, rates":
... pushes the carbonyl and methyl groups closer together, increasing the reactivity of insertion reactions ... state – Oxidation of the metal tends to increase insertion reaction rates ... The main rate-limiting step in the mechanism is the migration of the methyl group onto a carbonyl ligand, oxidizing the metal by imparting a greater ...
... The schematic reaction A + M → P is assumed to consist of two elementary steps A + M → A* + M (forward reaction rate = k1 reverse reaction rate = k-1) A* → P (forward reaction rate = k2) Assuming that ... The rate of production of A* in the first elementary step is simply d/dt = k1 (forward first step) A* is consumed both in the reverse first step and in the forward second step ... The respective rates of consumption of A* are -d/dt = k-1 (reverse first step) -d/dt = k2 (forward second step) According to the steady-state approximation, the rate of production of A* equals the rate of consumption ...
... For the reaction The rate equation (or rate expression) is The rate equation does not simply reflect the reactants stoichiometric coefficients in the overall ... In chemical kinetics, the overall reaction is usually proposed to occur through a number of elementary steps ... Not all of these steps affect the rate of reaction normally it is only the slowest elementary step that affect the reaction rate ...
... The rate of a chemical reaction is influenced by many different factors, such as temperature, pH, reactant and product concentrations and other effectors ... The degree to which these factors change the reaction rate is described by the elasticity coefficient ... This coefficient is defined as follows where denotes the reaction rate and denotes the substrate concentration ...
... concentration of chain-carrying radicals is constant, thus the rate of initiation equals the rate of termination ...
Famous quotes containing the words rate and/or reaction:
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—Leontine Young (20th century)
“Sole and self-commanded works,
Fears not undermining days,
Grows by decays,
And, by the famous might that lurks
In reaction and recoil,
Makes flames to freeze, and ice to boil.”
—Ralph Waldo Emerson (18031882)