Chemistry - Chapter 23: Chemical energetics

Lattice energy

The energy change when 1 mole of a solid ionic compound is formed from its gaseous ions under SD

Enthalphy change of atomization

The enthalpy change when 1 mole of gaseous atoms is formed from its element, under SD

First electron affinity (EA1)

The enthalpy change when 1 mole of electrons is added to 1 mole of gaseous atoms, forming 1 mole of gaseous ions with a single negative charge under SD

Second electron affinity (EA2)

The enthalpy change when 1 mole of electrons is added to one mole of gaseous 1- ions, forming 1 mole of gaseous 2- ions under SD

Standard enthalpy change of solution

The energy absorbed or released when 1 mol of an ionic solid dissolves in sufficient water to form very dilute solution under SD

Standard enthalpy change of hydration

The enthalpy change when 1 mole of a specified gaseous ion dissolves in sufficient water to form a very dilute solution under SD

Entropy (S)

Number of possible arrangements of the particles and their energy in a given system. How disordered a system is

Gibbs free energy

The energy changes that takes into account both the entropy change and enthalpy change of a reaction