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Reaction rate constant
In chemical kinetics a reaction rate constant k or λ quantifies the speed of a chemical reaction.
Additional recommended knowledge
For a chemical reaction n A + m B → C + D, the reaction rate is typically of the form
Here [X] denotes, for a reaction between liquids, gases, or solutes, the concentration of X; for a reaction taking place at a boundary it would denote something like moles of X per area.
In this equation k(T) is the reaction rate constant that depends on temperature.
Ea is the activation energy and R is the Gas constant. Since at temperature T the molecules have energies according to a Boltzmann distribution, one can expect the proportion of collisions with energy greater than Ea to vary with e-Ea/RT. A is the pre-exponential factor or frequency factor.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Reaction_rate_constant". A list of authors is available in Wikipedia.|