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19 Cards in this Set
- Front
- Back
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Arrhenius equation
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equation relating reaction rate constant, temperature, and activation energy.
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activation energy
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minimum energy required for a chemical reaction to take place.
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bimolecular
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elementary reaction that results from a collision between two reactant molecules.
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catalyst
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substance that increases the rate of reaction without itself being consumed.
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collision theory
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bimolecular reactions occur when two properly oriented reactant molecules come together in a sufficiently energetic collision.
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Ea
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height of the energy barrier between reactants and products.
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elementary process
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single chemical step in a reaction mechanism.
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first order
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rate proportional to the concentration of a single reactant raised to the first power.
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half-life
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amount of time required for the amount of a reactant to decrease to half of its initial amount (concentrations).
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rate (law)
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equation that tells how reaction rate depends on the concentration of each reactant.
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rate constant
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proportionality constant in a rate law.
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rate-determining step
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the slowest step in a reaction mechanism.
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rate law
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an equation that shows the dependence of the reaction rate on the concentration of each reaction.
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reaction mechanism
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sequence of elementary steps that defines the pathway from reactants to products.
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second order
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rate proportional to either the concentration of a single reactant raised to the second power or two different reactants each raised to the first power.
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termolecular
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elementary reaction that results from collisions between three reactant molecules.
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transition state theory
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configuration of atoms at the maximum in the potential energy profile for a reaction.
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unimolecular
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elementary reaction that involves a single reactant molecule.
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zero order
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rate of change is independent of the concentration of reactant.
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