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kinds of enthalpy
Term | Definition |
---|---|
Lattice enthalpy | one mole of a solid ionic lattice is formed from its gaseous ions under standard conditions |
enthalpy change of atomisation | one mole of gaseous atoms is formed from its element in its standard states |
ionisation energy | one mole of gaseous 1+ ions is formed from gaseous atoms |
electron affinity | one mole of gaseous 1- ions is formed from gaseous atoms |
hess' law | if a reaction can take place by more than one route and the initial and final conditions are the same, the total enthalpy change is the same for each route |
standard enthalpy chance of formation | the enthalpy change that takes place when one mole of a compound is formed from its constituent elements in their standard states under standard conditions |
combustion | one mole of a substance undergoes complete combustion in oxygen with all substances in standard states |
hydration | one mole of gaseous ions become dissolved in water |
solution | one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other |
dissociation | enthalpy change when one mole of covalent bonds is broken in the gaseous state |