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7 Cards in this Set
- Front
- Back
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Rate of Reaction |
The change in concentration of a reactant or product per unit time, measured using titrations, changes in volume or mass, or time taken for a precipitate to form. |
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Order |
The power to which the concentration of the reactant is raised in the rate equation- overall order is the sum of these orders. Zero order means the concentration has no effect on the rate, so it is not present in the rate equation. |
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Rate constant |
K- the constant that links the rate of reaction with the concentrations of the reactants raised to their orders in the rate equation. |
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Half Life |
The time taken for the concentration of a reactant to reduce by half- a first order reaction has a constant half life, as seen in a concentration time graph. |
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Reaction Mechanism |
A series of steps that together make up the overall reaction. |
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Intermediate |
A species formed in one step of a multi step reaction that is used up in a subsequent step and is not seen as either a reactant or product of the overall equation. |
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Rate determining step |
The slowest step in the reaction mechanism. If a reactant appears in the rate equation it is involved in the rate determining step- and has the same stoichometry as well. |
