Lesson Slideshow Section 01
Unit Summary Section 02
Key Concepts
Born-Haber Cycles, Lattice Enthalpy, Entropy, Gibbs Free Energy
Assessment Objectives
Construct Born-Haber cycles, Calculate lattice enthalpy, Predict spontaneity using ΔG
Prior Knowledge Needed
Stoichiometry, bond enthalpy, exo/endothermic reactions
IB Syllabus Reference
R1.1, R1.2
Interactive Study GuideClick here to view the full, detailed topic summary for this unit.
29
Cu
63.546
Video Lesson Section 03
HL Video Lessons
1 Extensions Available
Gibbs Free Energy_Born Haber Cycles [HL]
Practice Quiz Section 04 · Interactive
10
Ne
20.180
Vocabulary Review Section 05
Entropy ($S$)
A measure of the distribution of energy (disorder) in a system.
Gibbs Free Energy ($G$)
The energy available to do work in a system at constant T and P ($\Delta G = \Delta H - T\Delta S$).
Spontaneous Reaction
A reaction that occurs without constant external work ($-\Delta G$).
Lattice Enthalpy
The enthalpy change when one mole of an ionic compound is broken into gaseous ions.
Born-Haber Cycle
Energy cycle used to determine lattice enthalpies from experimental data.
Enthalpy of Hydration
Enthalpy change when one mole of gaseous ions dissolves in water to form an infinitely dilute solution.
Enthalpy of Solution
Net enthalpy change when one mole of an ionic solid dissolves in water.
26
Fe
55.845
Revision Notes Section 06
79
Au
196.967
Practice Tests Section 07
17
Cl
35.45
Worksheets & Labs Section 08