Search results
- Dictionaryrate constant
noun
- 1. a coefficient of proportionality relating the rate of a chemical reaction at a given temperature to the concentration of reactant (in a unimolecular reaction) or to the product of the concentrations of reactants.
Powered by Oxford Dictionaries
People also ask
What is a reaction rate constant?
What is a rate constant in chemical kinetics?
What are the units of the rate constant?
What is a specific rate constant?
In chemical kinetics, a reaction rate constant or reaction rate coefficient ( ) is a proportionality constant which quantifies the rate and direction of a chemical reaction by relating it with the concentration of reactants.
Jan 2, 2021 · The rate constant, k, is a proportionality constant that indicates the relationship between the molar concentration of reactants and the rate of a chemical reaction. The rate constant may be found experimentally, using the molar concentrations of the reactants and the order of reaction.
- Anne Marie Helmenstine, Ph.D.
The rate law provides a relationship between reaction rates and reactant concentrations. Learn about the integrated rate equations & rate constants for different reaction orders.
- 8 min
Feb 13, 2023 · A rate law is an expression which relates that rate of a reaction to the rate constant and the concentrations of the reactants. A rate constant, \(k\), is a proportionality constant for a given reaction. The general rate law is usually expressed as: \[ \text{Rate} = k[A]^s[B]^t \label{2} \]
Apr 30, 2022 · A rate law is an expression showing the relationship of the reaction rate to the concentrations of each reactant. The specific rate constant (k) ( k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants.
Nov 13, 2022 · Explain the difference between differential and integral rate laws. Sketch out a plot showing how the concentration of a component ( [A] or ln [A]) that follows first-order kinetics will change with time. Indicate how the magnitude of the rate constant affects this plot. Define the half-life of a reaction.
Dimensional analysis requires the rate constant unit for a reaction whose overall order is x to be L x − 1 mol 1 − x s −1. L x − 1 mol 1 − x s −1. Table 12.1 summarizes the rate constant units for common reaction orders.
