rate constants

rate con·stants (k),

proportionality constants equal to the initial rate of a reaction divided by the concentration of the reactant(s); for example, in the reaction A → B + C, the rate of the reaction equals -d[A]/dt = k₁[A]. The rate constant k₁ is a unimolecular rate constant because only one molecular species is reacting and has units of reciprocal time (for example, s^-1). For the reverse reaction, B + C → A, the rate equals -d[B]/dt = d[A]/dt = k₂[B][C]. The rate constant k₂ is a bimolecular rate constant and has units of reciprocal concentration-time (for example, M^-1 s^-1). Synonym(s): velocity constants

rate con·stants

(k) (rāt kon'stănts) Proportionality constants equal to the initial rate of a reaction divided by the concentration of the reactant(s); e.g., in the reaction A → B + C, the rate of the reaction equals -d[A]/dt = k₁[A]. The rate constant k₁ is a unimolecular rate constant, since there is only one molecular species reacting, and has units of reciprocal time (e.g., sec^-1). For the reverse reaction, B + C → A, the rate equals -d[B]/dt = d[A]/dt = k₂[B][C]. The rate constant k₂ is a bimolecular rate constant and has units of reciprocal concentration-time (e.g., m^-1 sec^-1).

单词	rate constants
释义	EncyclopediaSeerate constant rate constants rate con·stants (k), proportionality constants equal to the initial rate of a reaction divided by the concentration of the reactant(s); for example, in the reaction A → B + C, the rate of the reaction equals -d[A]/dt = k₁[A]. The rate constant k₁ is a unimolecular rate constant because only one molecular species is reacting and has units of reciprocal time (for example, s^-1). For the reverse reaction, B + C → A, the rate equals -d[B]/dt = d[A]/dt = k₂[B][C]. The rate constant k₂ is a bimolecular rate constant and has units of reciprocal concentration-time (for example, M^-1 s^-1). Synonym(s): velocity constants rate con·stants (k) (rāt kon'stănts) Proportionality constants equal to the initial rate of a reaction divided by the concentration of the reactant(s); e.g., in the reaction A → B + C, the rate of the reaction equals -d[A]/dt = k₁[A]. The rate constant k₁ is a unimolecular rate constant, since there is only one molecular species reacting, and has units of reciprocal time (e.g., sec^-1). For the reverse reaction, B + C → A, the rate equals -d[B]/dt = d[A]/dt = k₂[B][C]. The rate constant k₂ is a bimolecular rate constant and has units of reciprocal concentration-time (e.g., m^-1 sec^-1).
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