06 Energetics Flashcards
Standard enthalpy change of formation
The enthalpy change when one mole of pure substance is formed from its constituent elements in their standard states under standard conditions
Standard enthalpy change of combustion
Enthalpy change when one mole of substance is completely burned in excess oxygen under stand conditions
Standard enthalpy change of neutralisation
Enthalpy change when 1 mole of water is formed when an acid neutralises a base and is carried out in an indefinitely dilute aqueous solution under standard conditions
Bond dissociation energy (bond energy)
Enthalpy change when one mole of covalent bonds between 2 atoms in a gaseous molecule are broken
Standard enthalpy change of atomisation
Enthalpy change when 1 mole of isolated gaseous atoms are produced from the element in its standard state under standard conditions
Electron affinity
Heat change when 1 mole of gaseous atoms or negatively charges ions gain an electron each
Lattice energy
Enthalpy change when one mole of ionic solid is formed from its isolated gaseous ions from an infinite distance apart under standard conditions
Enthalpy change of hydration
Enthalpy change when one mole of gaseous ions is dissolved in large amount of water under standard conditions
Enthalpy change of solution
Enthalpy change when one mole of a solute is completely dissolved in solvent to form an infinitely dilute solution under standard conditions