A measure of the concentration of hydrogen ions in a solution
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Kw
Ionic product of water
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Buffer Solution
One that minimises changes to pH on addition of small amounts of acid or base
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Kinetics
The study of the speed or rate at which chemical reactions occur
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Rate Determining Step
The slowest stage of a mechanism that determines the rate of reaction
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Enthalpy Change
A heat change at constant pressure
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Standard Conditions
Pressure of 1 atmosphere, temperature of 298K, concentration of 1
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Standard Molar Enthalpy of Formation
The enthalpy change when 1 mole of compound is formed from its constituent elements under standard conditions
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Standard Enthalpy of Atomisation
Enthalpy change when 1 mole of gaseous atoms is formed from the element in its standard states under standard conditions
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First Ionisation Energy
Enthalpy change when 1 mole of gaseous atoms is converted into a mole of gaseous atoms each with a single positive charge
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Second Ionisation Energy
This refers to the loss of a mole of electrons from a mole of singly charged ions
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First Electron Affinity
Enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions, each with a negative charge
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Second Electron Affinity
Enthalpy change when a mole of electrons is added to a mole of gaseous atoms each with a single negative charge to form ions with 2 negative charges
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Lattice Formation Enthalpy
Enthalpy change when 1 mole of solid ionic compound is formed from its gaseous ions
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Enthalpy of Hydration
Enthalpy change when 1 mole of aqueous ions is formed from gaseous ions
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Enthalpy of Solution
Enthalpy change when 1 mole of solute dissolves completely in sufficient solvent to form a solution in which the molecules or ions are far enough apart not to interact with each other
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Mean Bond Enthalpy
Enthalpy change when 1 mole of gaseous molecules each breaks a covalent bond to form 2 free radicals, averaged over a range of compounds
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Entropy
A measure of the disorder of a system
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Transition Metals
An element that forms at least 1 ion with a partially filled d sub shell
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Complex Ion
Consists of a central metal ion with 1 or more negative ions or neutral molecules co-ordinately bonded to it
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Ligand
The donor of the pair of electrons
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Monodentate Ligand
These donate 1 pair of electrons to the central transition metal ion
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Bidentate Ligand
These donate 2 pairs of electrons
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Polydentate Ligand
These donate more than 2 pairs of electrons
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Stereoisomers
Have the same bonds but different spatial arrangements
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Stability Constant
The equilibrium constant of the formation of complexes
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Stereoisomers
Have the same bonds but different spatial arrangements
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Stability Constant
The equilibrium constant of the formation of complexes
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Other cards in this set
Card 2
Front
A proton acceptor
Back
Base (Bronsted Lowry)
Card 3
Front
Fully dissociates in water
Back
Card 4
Front
Partially dissociates in water
Back
Card 5
Front
A measure of the concentration of hydrogen ions in a solution
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