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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Enthalpy of Formation |
Enthalpy change when one mole of a compound is formed from its constituent elements (with all substances in their standard states). Exothermic |
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Bond dissociation enthalpy |
Enthalpy change when one mole of a covalent bond is broken in the gaseous state (with all substances in their standard states) Endothermic |
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Lattice enthalpy of formation |
Enthalpy change when one mole of a solid ionic compound is formed from its constituent ions in the gas phase.
Exothermic |
lattice = giant ionic lattice |
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Lattice enthalpy of dissociation |
Enthalpy change when one mole of a solid ionic compound is broken up into its constituent ions in the gas phase.
Endothermic |
lattice = giant ionic lattice |
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Ionisation enthalpy (1st) |
The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions. |
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Ionisation enthalpy (2nd) |
When one mole of gaseous 2+ ions is produced from one mole of 1+ ions Endothermic |
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Enthalpy of combustion |
Enthalpy change when one mole of a substance undergoes complete combustion in oxygen (with all substances in their standard states) Exothermic |
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Enthalpy of atomisation/vaporisaton |
Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state.
Endothermic |
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Hydration enthalpy |
Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water) Exothermic |
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Enthalpy of solution |
Enthalpy change when one mole of an ionic solid dissolves in solvent. If the solvent is water, the ionic lattice finishes up surrounded with water molecules as aqueous ions.
Reactions very between exothermic/endothermic |
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Electron affinity (1st) |
The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Exothermic |
Reverse ionisaton enthalpy |
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Electron affinity (2nd) |
The enthalpy chnave when one mole of gaseous 1- ions gains one electron per ion to produce gaseous 2- ions. Endothermic |
Reverse ionisation enthalpy |
