A rate law is an equation that describes how the rate of a chemical reaction changes with respect to the concentrations of the reactants. The rate law for a reaction is usually determined experimentally by measuring the rate of the reaction at different concentrations of the reactants.
The rate of a chemical reaction is the change in the concentration of a reactant or product per unit time. The rate of a reaction is usually given as the change in concentration of a reactant or product per unit time but it can also be given as the change in the rate of a reaction.
The rate law for a reaction is usually written as:
rate = k[A]^x[B]^y
where k is the rate constant [A] and [B] are the concentrations of the reactants and x and y are the reaction orders with respect to reactant A and reactant B respectively.
The rate law for a reaction can be determined experimentally by measuring the rate of the reaction at different concentrations of the reactants. The slope of the plot of the rate vs. the concentration of a reactant is the reaction order with respect to that reactant. The reaction order can also be determined from the stoichiometry of the reaction.
In a general sense the rate law for a reaction is a mathematical expression that describes how the rate of the reaction changes with respect to the concentrations of the reactants. The rate law for a reaction is usually determined experimentally by measuring the rate of the reaction at different concentrations of the reactants. The rate law for a reaction can also be determined from the stoichiometry of the reaction.
What is a rate law?
A rate law is an equation that describes how the rate of a reaction changes with reactant concentration.
What determines the rate law of a reaction?
The rate law of a reaction is determined by the reaction mechanism.
What is the rate law for a reaction that is first order in reactant A and second order in reactant B?
The rate law for this reaction would be written as Rate= k[A] [B]^2.
What is the order of a reaction?
The order of a reaction is the sum of the exponents in the rate law equation.
What is the difference between the rate law and the rate constant?
The rate law is an equation that describes how the rate of a reaction changes with reactant concentration.
The rate constant is a number that is specific to a reaction and its conditions and it is a measure of the how fast the reaction is.
How is the rate constant related to the rate law?
The rate constant is a number that is specific to a reaction and its conditions and it is a measure of the how fast the reaction is.
The rate constant is related to the rate law by the equation: k = Rate/[A]^x[B]^y.
How does the order of a reaction affect the rate constant?
The order of a reaction affects the rate constant in that it is a exponent in the rate law equation.
The higher the order of the reaction the higher the rate constant will be.
How does the concentration of reactants affect the rate of a reaction?
The concentration of reactants affects the rate of a reaction by changing the rate constant.
What is the unit for the rate constant?
The unit for the rate constant is inverse seconds or 1/s.
What is the rate law for a zeroth order reaction?
The rate law for a zeroth order reaction is Rate = k[A]^0[B]^0 or simply Rate = k.
What is the integrated rate law for a second order reaction?
The integrated rate law for a second order reaction is 1/[A]t = k[A]0 + 1/[B]t.
What is the half-life of a reaction?
The half-life of a reaction is the time it takes for the concentration of a reactant to decrease by half.
How is the half-life of a reaction related to the rate constant?
The half-life of a reaction is inversely related to the rate constant.
What is the order of a reaction if the half-life of the reaction is independent of concentration?
If the half-life of a reaction is independent of concentration then the order of the reaction is zero.
How does temperature affect the rate of a reaction?
Temperature affects the rate of a reaction by changing the rate constant.
