rate constant
[/reɪt ˈkɒnstənt/]
nounpl: rate constants
constante de velocidade
1. A proportionality constant in the rate equation of a chemical reaction that relates the concentration of reactants to the rate of reaction, typically represented by the symbol k
The rate constant for this reaction increases with temperature according to the Arrhenius equation.
A constante de velocidade dessa reação aumenta com a temperatura de acordo com a equação de Arrhenius.
2. In chemistry, a numerical value that expresses the speed at which a chemical reaction proceeds under specific conditions
The units of the rate constant depend on the order of the reaction.
As unidades da constante de velocidade dependem da ordem da reação.
This is a specialized technical term used universally in chemistry education and research in both Brazil and the United States. It appears consistently in chemistry textbooks, laboratory reports, and scientific publications across both countries without regional variation in meaning.
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