Thermodynamics definitions Flashcards
What is enthalpy of formation?
The enthalpy change when one mole of a substance is formed from its constituent elements in their standard states under standard conditions.
What is enthalpy of combustion?
The enthalpy change when one mole of a substance undergoes complete combustion in pure oxygen in standard conditions.
What is enthalpy of neutralization?
Enthalpy change when one mole of water is formed in a reaction between an acid and alkali under standard conditions.
What is first ionisation enthalpy?
Enthalpy change when each atom in one mole of gaseous atoms loses one electron to form one mole of gaseous 1+ ions.
What is second electron affinity?
Enthalpy change when each 1- ion in one mole of gaseous 1- ions gain one electron to form a mole of gaseous 2- ions.
What is enthalpy of atomisation?
Enthalpy change when one mole of gaseous atoms is produced from its element in standard states.
What is hydration enthalpy?
Enthalpy change when one mole of gaseous ions is dissolved in water (hydrated).
What is the enthalpy of solution?
Enthalpy change when one mole of an ionic solid dissolve in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other.
What is bond dissociation enthalpy?
Enthalpy change when one mole of covalent bonds is broken in its gaseous state.
What is lattice enthalpy of formation?
Enthalpy change when one mole of a solid ionic compound is formed from its constituent ions in its gas phase.
What is lattice enthalpy of dissociation?
Enthalpy change when one mole of a solid ionic compound is broken into its constituent ions in its gas phase.
What is the enthalpy of vaporisation?
Enthalpy change when one mole of a liquid is turned into a gas.
What is the enthalpy of fusion?
Enthalpy change when one mole of a solid is turned into a liquid.
