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Flashcards in Enthalpy and Entropy Deck (4)
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1

Lattice Enthalpy

Enthalpy change that accompanies the formation of one mole of an ionic compound from its gaseous ions under standard conditions.

2

What does Lattice Enthalpy involve?

It involves bond formation from separate gaseous ions. It is an exothermic change (value will be negative).

3

Solid ionic compounds

-Stable which arises from the strength of ionic bonds, electrostatic attractions between oppositely charged ions in the ionic in the ionic lattice structure

-This creates a substantial energy barrier that must be overcome to break down the lattice which is reflected by high melting points

-Lattice enthalpy is the measure of the strength of ionic bonding in a giant lattice.

4

How can lattice enthalpy be measured?

Lattice enthalpy is calculated indirectly using known changes