Definitions

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  • Created by: Celine
  • Created on: 23-10-13 20:07
Rate constant (k)
The constant that links the rate of reaction with the concentrations of the reactants
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Half-life
The time taken for the concentration of the reactant to reduce by half
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Reaction mechanism
A series of steps that, together, make up the overall reaction
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Rate-determining step
The slowest step in the reaction mechanism of a multi-step reaction
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Intermidiate
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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Dynamic equilibrium
Exists in a closed system when the rate of the forward reaction is equal to the rate of the reverse reaction
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Homogeneous equilibrium
An equilibirum in which all the species making up the reactants and products are in the same physical state
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Heterogeneous equilibrium
An equilibrium in which species making up the reactants and products are in different physical states
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Bronsted-Lowry acid
A proton (H+) donor
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Bronsted-Lowry base
A proton (H+) acceptor
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Alkali
A base that dissolves in water forming OH-(aq) ions
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Neautralisation
A chemical reaction in which an acid and a base react together to produce a salt and water
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Acid-base pair
A pair of two species that transform into each other by gain or loss of a proton
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Strong acid
An acid that completely dissociates in solution
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Weak acid
An acid that partially dissociates in solution
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Buffer solution
A mixture that minimises pH changes on addition of small amounts of acid or base
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Equivalence point
The point in a titration at which the volume of one solution has reacted exactly with the volume of the second solution
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End point
The point in a titration at which there are equal concentrations of the weak acid and conjugate base forms of the indicator
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Other cards in this set

Card 2

Front

The time taken for the concentration of the reactant to reduce by half

Back

Half-life

Card 3

Front

A series of steps that, together, make up the overall reaction

Back

Preview of the back of card 3

Card 4

Front

The slowest step in the reaction mechanism of a multi-step reaction

Back

Preview of the back of card 4

Card 5

Front

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

Back

Preview of the back of card 5
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