energetics all definitions Flashcards
define the Standard Enthalpy Change of Reaction
the enthalpy change when molar quantities as stated in the equation react together under standard conditions
define the Standard Enthalpy of Formation
the enthalpy change when one mole of a compound is formed from its constituent elements in their standard states under standard conditions
define the Standard Enthalpy of Combustion
the enthalpy change when one mole of a substance is completely burned in oxygen under standard conditions
define the Standard Enthalpy of Neutralisation
the enthalpy change that accompanies the neutralisation of an aqueous acid by an aqueous base to form one mole of water under standard conditions
define First Ionisation Energy
the enthalpy change when one mole of electrons are removed from one mole of gaseous atoms to produce one mole of gaseous 1+ ions
define the Standard Enthalpy of Atomisation (of an element)
the amount of energy required to produce one mole of gaseous atoms from an element in its standard state under standard conditions
define Lattice Enthalpy of Formation
the enthalpy change when one mole of an ionic compound is formed from its constituent gaseous ions
define Lattice Enthalpy of Dissociation
the enthalpy change when one mole of an ionic compound is split up into its constituent gaseous ions
define First Electron Affinity
the enthalpy change when one mole of electrons is added to one mole of atoms in the gaseous state to form one mole of gaseous 1- ions
define Second Electron Affinity
the enthalpy change when one mole of electrons is added to one mole of 1- ions in the gaseous state to form one mole of gaseous 2- ions
define Enthalpy of Hydration
the enthalpy change when one mole of gaseous ions dissolve in water to form one mole of aqueous ions
define the Standard Enthalpy Change of Solution
the enthalpy change when one mole of a substance in its standard state is dissolved in water to form a solution where the ions are far enough apart not to interact, under standard conditions