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18 Cards in this Set
- Front
- Back
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Change in concentration of reactant or product over a specific time interval. |
Average rate |
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Reaction rate at a particular instant, determined graphically as tangential slope of concentration vs time plot |
Instantaneous rate |
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Experimentally determined number defining the dependence of the reaction rate on the concentration of a reaction |
Order of reaction |
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Equation defining relationship between reactant concentrations and reaction rate |
Rate law |
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Minimum energy of molecular collisions required to break bonds in reactant, leading to formation of products |
Activation energy (Ea) |
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Reactants react because the collide |
Collision model |
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Path of least resistance in going from reactants to products |
Reaction pathway |
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All reactants but one are present at such high concentrations that they do not change significantly during the course of reaction; reaction rate determined by the concentration of the limiting reactant |
Pseudo-first-order |
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Rate of reaction is independent of concentration |
Zero-order |
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What is the half life equation for first order? |
t1/2 = 0.693/k |
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What is the half life equation of a second order reaction? |
t1/2 = 1/k[A]0 |
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What is the half life equation for a zero order reaction? |
t1/2 = [A]0/2k |
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Proposed set of steps that describe how a reaction occurs |
Reaction mechanism |
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Molecular level view of single process in a chemical reaction |
Elementary step |
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A species produced in one step of a reaction mechanism and consumed in a later step |
Intermediate |
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The number of reactant ions, atoms, or molecules involved in an elementary step |
Molecularity |
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Reactant that binds to enzyme |
Substrate |
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Place on enzyme that substrate reacts |
Active site |
