Chemistry A2- keywords Unit 2

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Rate of reaction
The change in concentration in product or reactant over time
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Order
With respect to a reactant is the power to which the concentration of the reactant is raised in the rate equation
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Rate constant, K
The constant that links the rate of react with the con of the reactants raised to the powers of their orders in the rate equation
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Half-life
The time taken for the concentration of the reactant to reduce by half
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multi-step reaction
The slowest step in a multi-step reaction mechanism of a multi-step reaction
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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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Acid-base pair
A pair of 2 species that transform into eachother by gaining or losing H+
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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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standard enthalpy change of neutralisation
The energy change that accompanies acid neutralisation of an aqeous acid by an aqeous base to form one mole of H20 under standard con
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Equivalence point
The point at which the volume of one solution has reacted exactly with the volume of the second solution
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End point
Is the point at which there are equal conc of the weak acid and conjugate base forms of the indicator
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Other cards in this set

Card 2

Front

Order

Back

With respect to a reactant is the power to which the concentration of the reactant is raised in the rate equation

Card 3

Front

Rate constant, K

Back

Preview of the front of card 3

Card 4

Front

Half-life

Back

Preview of the front of card 4

Card 5

Front

multi-step reaction

Back

Preview of the front of card 5
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