20.4 Enthalpy Changes in Solutions Recall enthalpy change of solution and hydration Standard enthalpy change of solution, ΔH°sol is the enthalpy change when one mole of ionic compounds is dissolved in water to form an infinitely dilute solution under standard...
20.3 Ion Polarisation Polarising power and polarisability Not all ionic compounds are fully ionic, the same goes to covalent compounds. Pure ionic and covalent bondings are extremes In an ionic compound, the positive charge on the cation may attract the...
20.1 Born-Haber Cycles What are Born-Haber cycles? Lattice energy cannot be determined experimentally, however, it can be calculated using a special type of Hess' cycle, this is called the Born-Haber cycle. It assumes that the final product is the solid...
CHAPTER 20: Lattice Energy Introduction to Lattice Energy Born-Haber Cycles Ion Polarisation Enthalpy Changes in Solutions Learning outcomes: explain and use the term lattice energy (∆H negative, e. gaseous ions to solid lattice). explain, in qualitative terms, the...
20.1 Introduction to Lattice Energy What is lattice energy? In a solid ionic crystal lattice, the ions are bonded by strong ionic bonds between them. These forces are only completely broken when the ions are in gaseous state Lattice energy(or lattice...