Chemistry at University Of Dublin, Trinity College | Flashcards & Summaries

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Lernmaterialien für Chemistry an der University of Dublin, Trinity College

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Salt
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A substance formed when the hydrogen in the acid is replaced by a metal or an ammonium ion
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Instantaneous rate of reaction
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Change in concentration per unit time of any one reactant or product at a given moment in time 
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Activation energy
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Minimum energy which colliding parties must have for a reaction to occur
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catalyst

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a substance that alters the rate of a reaction but is not consumed in the reaction

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homogenous catalysis

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both catalyst and reactant are in the same phase

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heterogenous catalysis

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catalyst is in a different phase to the reactants

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autocatalysis

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where one of the products of a reaction also acts as a catalyst for the reaction

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Standard solution
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A solution of precisely known concentration
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Primary standard
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A substance obtained in a stable, pure and soluble form with a high relative molecular mass that can be weighed out to give a solution of accurately known concentration
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Standardised solution
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A solution whose concentration is known, having been found by titration against another solution of known concentration 
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TESTE DEIN WISSEN
Titration
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TESTE DEIN WISSEN
A procedure to find out the volume of one solution needed to react completely with a measured known volume of another. The concentration of one solution is known and the concentration of the second can be calculated.
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TESTE DEIN WISSEN
Electronegativity
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TESTE DEIN WISSEN
The relative attraction an atom in a molecule has for the shared pair of electrons in a covalent bond
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Q:
Salt
A:
A substance formed when the hydrogen in the acid is replaced by a metal or an ammonium ion
Q:
Instantaneous rate of reaction
A:
Change in concentration per unit time of any one reactant or product at a given moment in time 
Q:
Activation energy
A:
Minimum energy which colliding parties must have for a reaction to occur
Q:

catalyst

A:

a substance that alters the rate of a reaction but is not consumed in the reaction

Q:

homogenous catalysis

A:

both catalyst and reactant are in the same phase

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Q:

heterogenous catalysis

A:

catalyst is in a different phase to the reactants

Q:

autocatalysis

A:

where one of the products of a reaction also acts as a catalyst for the reaction

Q:
Standard solution
A:
A solution of precisely known concentration
Q:
Primary standard
A:
A substance obtained in a stable, pure and soluble form with a high relative molecular mass that can be weighed out to give a solution of accurately known concentration
Q:
Standardised solution
A:
A solution whose concentration is known, having been found by titration against another solution of known concentration 
Q:
Titration
A:
A procedure to find out the volume of one solution needed to react completely with a measured known volume of another. The concentration of one solution is known and the concentration of the second can be calculated.
Q:
Electronegativity
A:
The relative attraction an atom in a molecule has for the shared pair of electrons in a covalent bond
Chemistry

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