When we measure a heat change at constant pressure we call it enthalpy change.
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Enthalpy of Formation
The enthalpy change when one mole of a compound is formed from its consituent elements under standard conditions, all reactants and products in their standard states.
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Enthalpy of Atomisation
The enthalpy change which accompanies the formation of one mole of gaseous atoms from the element in its standard state under standard conditions.
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First ionisation energy
Standard enthalpy change when one mole of gaseous atoms is converted into one mole of unipositive gaseous ions.
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First electron affinity
Standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions, each with a single -ve charge.
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Second electron affinity
Enthalpy change when a mole of electrons is added to a mole of gaseous ions each with a single -ve charge to form ions each with 2 x -ve charges.
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Lattice formation enthalpy
Standard enthalpy change when one mole of solid ionic compound is formed from its gaseous ions.
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Enthalpy of hydration
Standard enthalpy change when water molecules surround one mole of gaseous ions
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Enthalpy of solution
Standard enthalpy change when one mole of solute dissolves completely in sufficient solvent to form a solution in which the particles are far enough apart not to interact with each other.
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Mean bond enthalpy
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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Other cards in this set
Card 2
Front
The enthalpy change when one mole of a compound is formed from its consituent elements under standard conditions, all reactants and products in their standard states.
Back
Enthalpy of Formation
Card 3
Front
The enthalpy change which accompanies the formation of one mole of gaseous atoms from the element in its standard state under standard conditions.
Back
Card 4
Front
Standard enthalpy change when one mole of gaseous atoms is converted into one mole of unipositive gaseous ions.
Back
Card 5
Front
Standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions, each with a single -ve charge.
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