Key Terms
chemical kinetics
The study of the rates of chemical processes.
reaction rate
The speed at which a reaction occurs, which is described by the change in concentration of a
reactant or product over time.
ra
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Key Terms
chemical kinetics
The study of the rates of chemical processes.
reaction rate
The speed at which a reaction occurs, which is described by the change in concentration of a
reactant or product over time.
rate law
An equation that describes the reaction rate in terms of concentrations of reactants.
rate constant
A constant, k, that gives the relationship between a reaction rate and the concentrations of
reactants.
reaction order
The power to which a concentration term is raised in a rate law.
overall reaction order
The sum of the reaction orders of each of the reactants.
zero-order reaction
A reaction in which changes in concentration of the reactant do not affect the reaction rate.
first-order reaction
A reaction in which the rate of reaction depends on the concentration of one reactant raised to the
first power.
differential rate law
A differential equation that relates the rate of a reaction to the concentrations of the species
involved in the reaction.initial rate
The instantaneous rate of a reaction at time zero.
instantaneous rate
The rate at a particular moment in time; the slope of the tangent to a point on a rate vs. time
curve.
integrated rate law
An equation that expresses the rate of a reaction as the mathematical relationship between
concentration and time.
half-life
The amount of time it takes for half of a reactant to be converted into product.
radioactive decay
Loss of particles or electromagnetic radiation from an unstable nucleus.
2.1.3Study:Rate Laws
Define differential rate law.
Rate law Reaction order Relationship of rate to
reactant concentration
Rate = k[A]0
First order
Directly proportional to the
square of the reactant
concentrationDefine integrated rate law.
Plot a line for a zero-, first-, and second-order integrated rate law. Be sure to include labels
on the x- and y-axes. Write the corresponding equation for each line.
This chart shows the data collected for an experiment measuring the rate of the degradation
of nitrosyl bromide, NOBr, into nitric oxi
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