# What Is A Rate Law

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.