Thermodynamics definitions Flashcards
1st ionisation
Enthalpy change when each atom in one mole of gaseous atoms loses one electron to form one mole of 1+ gaseous ions
2nd ionisation
Enthalpy change when each ion in one mole of gaseous 1+ ions loses one electron to form one mole of gaseous 2+ ions
1st electron affinity
Enthalpy change when each atom in one mole of gaseous atoms gains one electron to form one mole of gaseous 1- ions
2nd electron affinity
Enthalpy change when each ion in one mole of gaseous 1- ions gains one electron to form one mole of gaseous 2- ions.
Enthalpy of atomisation
Enthalpy change when one mole of gaseous atoms is produced from an element in its standard state.
Bond dissociation enthalpy
Enthalpy change when one mole of covalent bonds is broken in the gaseous state.
Lattice enthalpy of formation
Enthalpy change when one mole of a solid ionic compound is formed from its constituent ions in the gas phase
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.
Enthalpy of vaporisation
Enthalpy change when one mole of a liquid is turned into a gas
Enthalpy of fusion
Enthalpy change when one mole of a solid is turned into a liquid.
Enthalpy of formation
Enthalpy change when one mole of a substance is formed from its constituent elements with all substances in their standard states.
Enthalpy of combustion
The enthalpy change when one mole of a substance in its standard state burns completely in oxygen under standard conditions of 298K and 1 bar pressure.
Enthalpy of hydration
Enthalpy change when one mole of gaseous ions is converted into one mole of aqueous ions.
Enthalpy of soluton
Enthalpy change when one mole of an ionic compound is dissolved in a solvent to form an infinitely dilute solution
