The effect for the hydrolysis of sucrose was noticed by Ludwig Wilhelmy.
Although other orders are possible, these three are the most common.
The rate of the reaction is independent of the concen layer.
The number of particles is constant.
The slope of the line is constant.
The rate is constant because the reaction doesn't slow down when the concentration of A decreases.
Subliming is normally zero order because only molecules at the surface of a substance can become subliming, and the concentration of the surface molecule does not change as the amount of subliming substance decreases.
The rate slows down as the reaction proceeds because the con is just below it.
The rate is directly time does not change with the total number of particles in the sample.
The rate is proportional to the square of the concentration.
The initial rate is measured by running the reaction several times with different initial reactant concentrations to determine the effect of the concentration on the rate.
The results are shown in the table.
The initial rate is proportional to the initial concentration when the concentration of A doubles.
The rate constant for a first-order reaction has units of s - 1.
The rate is the same at all measured initial concentrations for a zero-order reaction.
For a secondorder reaction, the initial rate triples for a doubling of the reactant concentration.
The rate constant for a zero-order reaction has units of M # s-1, and the rate constant for a second-order reaction has units of M # s-1.
A simple reaction with only one reactant has been considered so far.
The rate law for the reaction can't be determined simply by looking at a chemical equation.
When there are two or more reactants, the concentration of each reactant is different and the dependence of the rate on the concentration of that reactant is different.