Rate Constant
| Formula / Notation | Rate = k[A]^m[B]^n; k = A·e^(-Ea/RT) |
|---|---|
| Also Known As | Rate coefficient, specific rate constant, k value |
What is Rate Constant?
The proportionality constant (k) in a rate law relating reaction rate to reactant concentrations. It depends on temperature (Arrhenius equation: k = Ae^(-Ea/RT)) but not on concentration. Units depend on the overall order of the reaction.
Formula & Notation
Other Names / Synonyms: Rate coefficient, specific rate constant, k value
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The proportionality constant (k) in a rate law relating reaction rate to reactant concentrations. It depends on temperature (Arrhenius equation: k = Ae^(-Ea/RT)) but not on concentration. Units depend on the overall order of the reaction.
Rate constants are used to design chemical reactors and optimise industrial processes. They are essential in pharmacokinetics for modelling drug metabolism. Rate constants help predict the shelf life of chemicals and pharmaceuticals.
Reactions with very large rate constants proceed rapidly and may be explosive or highly exothermic, requiring careful handling. Rate constant data guides safe operating conditions for chemical processes.
The formula or notation for Rate Constant is: Rate = k[A]^m[B]^n; k = A·e^(-Ea/RT)