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The Progress of Chemical Reactions
vocab and main ideas- 18.5
10
Chemistry
11th Grade
05/15/2009

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Term
an expression relating the rate of a reaction to the concentration of the reactants
Definition
rate law
Term
a proportionality constant relating the concentrations of reactants to the rate of the reaction
Definition
specific rate constant
Term
when is k, the specific rate constant, large?
Definition
if the products form quickly
Term
when is k small?
Definition
if the products form slowly
Term
a reaction in which the reaction rate is proportional to the concentration of only one reactant
Definition
first order reaction
Term
a reaction in which reactants are converted to products in a single step
Definition
elementary reaction
Term
a series of elementary reactions that take place during the course of a complex reaction
Definition
reation mechanism
Term
what do peaks refer to in a reaction progress curve?
Definition
energies of the activated complexes
Term
what do the valleys refer to in the reaction progress curve?
Definition
energy of an intermediate
Term
a product of one of the steps in a reaction mechanism; it becomes a reactant in the next step
Definition
intermediate
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