Born-Haber Cycles

Flashcards about Born-Haber Cycles

Born-Haber Cycle

Shows all the steps (enthalpy changes) involved in forming an ionic solid from its elements in their standard states.

Hess’s Law

The total energy change around a cycle is zero because energy is conserved.

ΔHf°

Standard Enthalpy of Formation (making the solid ionic compound from elements).

ΔHlatt°

Lattice Enthalpy (energy to form the ionic lattice from gaseous ions).

ΔHat°

Enthalpy of Atomization (breaking elements into atoms in gas phase).

ΔHi.e.°

Ionization Energy (removing electrons from gaseous atoms).

ΔHea°

Electron Affinity (adding electrons to gaseous atoms).

Endothermic

Energy absorbed (represented by upward arrows in diagrams).

Exothermic

Energy released (represented by downward arrows in diagrams).