In chemistry the rate constant is a measure of the speed at which a reaction occurs. It is usually expressed in terms of the rate of change of the concentration of a reactant or product with respect to time. The rate constant is a constant for a given reaction and is independent of the concentrations of the reactants and products. The value of the rate constant depends on the temperature pressure and other conditions of the reaction.
What is the rate constant?
Answer: The rate constant is the constant of proportionality that relates the rate of a chemical reaction to the concentrations of the reactants.
How is the rate constant related to the rate of a chemical reaction?
Answer: The rate constant is proportional to the rate of a chemical reaction.
How is the rate constant related to the concentrations of the reactants?
Answer: The rate constant is inversely proportional to the concentrations of the reactants.
What is the units of the rate constant?
Answer: The units of the rate constant depend on the order of the reaction.
What is the rate constant for a first order reaction?
Answer: The rate constant for a first order reaction is k= -ln(A)/t
What is the rate constant for a second order reaction?
Answer: The rate constant for a second order reaction is k= 1/([A]t)
What is the rate constant for a zero order reaction?
Answer: The rate constant for a zero order reaction is k= 1/t
What is the rate constant for a third order reaction?
Answer: The rate constant for a third order reaction is k= 1/([A]^2t)
How does the rate constant change with temperature?
Answer: The rate constant increases with temperature.
What is the Arrhenius equation?
Answer: The Arrhenius equation is k= Ae^(-Ea/RT)
What is the activation energy?
Answer: The activation energy is the minimum energy required for a chemical reaction to occur.
What is the Arrhenius constant?
Answer: The Arrhenius constant is a proportionality constant in the Arrhenius equation.
What is the gas constant?
Answer: The gas constant is the constant of proportionality that relates the energy of a system to the temperature of the system.
What is the frequency factor?
Answer: The frequency factor is a proportionality constant in the Arrhenius equation.
How does the rate constant change with temperature?
Answer: The rate constant increases with temperature.
