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prefix uni
The ________- means one, bi- means two, and ter- means three.
Catalysts
________ can be classified as homogeneous or heterogeneous h** omogeneous**: They exist in the same phase as the reactants.
rate law
An integrated ________ relates concentration to reaction time.
Unimolecular step
________**: A reaction involving one molecule.
t1 2
For a first- order reaction, ________ is independent of the initial concentration.
theory of gases
The kinetic molecular ________ predicts that an increase in temperature raises molecular velocities and so increases the frequency of collisions between molecules.
proportionality constant k
The ________, called the rate constant, and n, called the order of the reactant, must both be determined by experiment.
identical molecules
When two ________ combine, the resulting molecule is called a dimer.
original concentration
The time required for a reactant to reach half its ________ is called the half- life of a reactant.
value of Ea
The ________ can be found by obtaining the values of k at several temperatures.
zero order reaction
A(n) ________ has a constant rate.
Heterogeneous catalysis
________ also occurs in the oxidation of gaseous sulfur dioxide to gaseous sulfur trioxide.
K
________ is the rate constant is the order; not related to the coefficients in the balanced equation.
Reaction mechanism
________, a series of elementary steps that must satisfy two requirements: The sum of the elementary steps must give the overall balanced equation for the reaction.
order reaction
For a first- ________, a plot of ln / [A]/versus t is always a straight line.
rate law
To experimentally determine the integrated ________ for a reaction, concentrations are measured at various values of t as the reaction proceed.
Note
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