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Chapter 9 Vocab
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15 Terms
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rate
change in concentration per unit time
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rate law
mathematical relationship b/n rate of reaction and concentrations of reactants
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rate constant
proportionality factor
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flooding (isolation)
conditions in which all but one reactant's concentrations don't change appreciably over the course of the reaction
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integrated rate law
mathematical relationship b/n concentrations of species and time
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half life
time it takes for a concentration to be reduced by a factor of 2
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frequency factor
pre-exponential value that accounts for the number of collisions and the orientation of molecular collisions
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activation energy
energy input needed for a reaction to proceed
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activated state
energy and orientation of a molecule that has been given energy but has not yet been converted into products
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transition state
high-energy point on a reaction coordinate diagram
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catalyst
substance that increases the rate of a chemical reaction w/o being consumed
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elementary step
chemical reaction whose rate law is directly related to its molecularity
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rate-determining step
slowest step in a reaction mechanism
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molecularity
how many molecules must come together for a reaction to proceed
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reaction intermediate
species produced in one step of a mechanism but consumed in another