Rate Laws and the Rate Constant
A rate law is an expression which links the rate of a chemical reaction to the rate constant and the concentrations of the reactants.
The rate constant is a coefficient of proportionality relating the rate of a chemical reaction at a given temperature to either the concentration of reactant or to the product of the concentrations of reactants.
The general rate law is as follows:
aA + bB → cC + dD
The rate is proportional to [A]m[B]n so;
rate = k[A]m[B]n
Where:
A rate law is an expression which links the rate of a chemical reaction to the rate constant and the concentrations of the reactants.
The rate constant is a coefficient of proportionality relating the rate of a chemical reaction at a given temperature to either the concentration of reactant or to the product of the concentrations of reactants.
The general rate law is as follows:
aA + bB → cC + dD
The rate is proportional to [A]m[B]n so;
rate = k[A]m[B]n
Where:
- rate is measured in mol dm-3-1
- k is the rate constant
- A and B are the concentrations in mol dm-3
- m is the order of reaction with respect to A
- n is the order of reaction with respect to B