Thermodynamic definitions

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Enthalpy of formation
The enthalpy change when one mole of a compound is formed from its constituent elements, with all reactants and products in their standard states and under standard conditions
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Enthalpy of combustion
The enthalpy change when one mole of a compound is burned completely in oxygen, with all reactants and products in their standard states and under standard conditions
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First ionisation enthalpy
The enthalpy change when one mole of electrons is removed from one mole of gaseous atoms to form one mole of gaseous 1+ ions
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Enthalpy of atomisation
The enthalpy change when one mole of gaseous atoms is formed from an element in its standard state
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Bond dissociation enthalpy
The enthalpy change when all the bonds of the same type in one mole of gaseous molecules are broken
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Mean bond enthalpy
The enthalpy change when one mole of gaseous molecules each breaks a covalent bond to form two free radicals, averaged over a range of compounds
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First electron affinity
The enthalpy change when one mole of electrons is added to one mole of gaseous atoms to form one mole of gaseous 1- ions
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Lattice formation enthalpy
The enthalpy change when one mole of an ionic solid is formed from its gaseous ions, under standard conditions
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Lattice dissociation enthalpy
The enthalpy change when one mole of an ionic solid is separated into its gaseous ions, under standard conditions
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Enthalpy change of solution
The enthalpy change when one mole of an ionic solid is dissolved completely in water to form a solution of infinite dilution under standard conditions
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Enthalpy change of hydration
The enthalpy change when one mole of gaseous ions is dissolved completely in water to form one mole of aqueous ions, under standard conditions
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Card 2

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The enthalpy change when one mole of a compound is burned completely in oxygen, with all reactants and products in their standard states and under standard conditions

Back

Enthalpy of combustion

Card 3

Front

The enthalpy change when one mole of electrons is removed from one mole of gaseous atoms to form one mole of gaseous 1+ ions

Back

Preview of the back of card 3

Card 4

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The enthalpy change when one mole of gaseous atoms is formed from an element in its standard state

Back

Preview of the back of card 4

Card 5

Front

The enthalpy change when all the bonds of the same type in one mole of gaseous molecules are broken

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