Thermodynamics

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Define enthalpy change
A measure of heat change under conditions of constant pressure
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Standard enthalpy change of formation
Enthalpy change when one mole of a compound is formed from its constituent elements with both reactants and products in their standard states under standard conditions
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Standard enthalpy of hydration
Standard enthalpy change when one mole of gaseous ions is converted to 1 mole of aqueous ions
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Standard enthalpy of lattice dissociation
Standard enthalpy change when one mole of a solid ionic compound dissociates into its gaseous ions
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Standard enthalpy of lattice formation
Standard enthalpy change when one mole of a solid ionic compound is formed from its gaseous ions
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First ionisation energy
Enthalpy change required to remove one mole of electrons from one mole of atoms to form one mole of ions with a single positive charge with all species in a gaseous state
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Second ionisation energy
Enthalpy change required to remove one mole of electrons from one mole of +1 ions to form 1 mole of 2+ ions with all species in a gaseous state
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Bond dissociation enthalpy
Enthalpy change to break a covalent bond in one mole of molecules to form two moles of gaseous ions with all species in a gaseous state
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Standard enthalpy of solution
Enthalpy change when one mole of an ionic solid dissolves completely in sufficient solvent to form a solution in which the ions are far enough apart not to interact with each other and two moles of aqueous ions are formed
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First electron affinity (exothermic)
Standard enthalpy change when one mole of gaseous atoms gains one mole of electrons to form one mole of gaseous ions with a single negative charge
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Second electron affinity (endothermic)
Enthalpy change when one mole of electrons is added to one mole of gaseous ions with a single negative charge to form one mole of gaseous ions each with two negative charges
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Enthalpy of sublimation
Numerically the same as the enthalpy of atomisation - enthalpy change for a solid turning to a gaseous atom
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Standard enthalpy of atomisation
Enthalpy change when one mole of gaseous atoms is formed from the element in its standard state under standard conditions
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Card 2

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Standard enthalpy change of formation

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Enthalpy change when one mole of a compound is formed from its constituent elements with both reactants and products in their standard states under standard conditions

Card 3

Front

Standard enthalpy of hydration

Back

Preview of the front of card 3

Card 4

Front

Standard enthalpy of lattice dissociation

Back

Preview of the front of card 4

Card 5

Front

Standard enthalpy of lattice formation

Back

Preview of the front of card 5
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