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

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