Lattice enthalpy
What Lattice enthalpy means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of Lattice enthalpy
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Reference: OCR
A quantity of a simple ionic solid that cannot be measured directly and is found from measurable quantities combined through a Born–Haber cycle.
The enthalpy change when one mole of an ionic lattice forms from its gaseous ions, an exothermic process.
The enthalpy change when one mole of an ionic lattice forms from its gaseous ions, given the symbol ΔLEH.
The enthalpy change when one mole of an ionic lattice forms from its gaseous ions, with symbol ΔLEH.
The enthalpy change when one mole of a solid ionic compound is formed from its gaseous ions.
Defined as exothermic for formation, so breaking the lattice is its positive reverse.
Topics that use Lattice enthalpy
- Born–Haber cycles (A-level only) (AQA A-Level)
- Lattice enthalpy (OCR A-Level)
Related terms
- Born–Haber cycle
- Electron affinity
- enthalpy of formation
- lattice dissociation enthalpy
- Covalent character
- Effect of ionic charge and radius on lattice enthalpy
- Enthalpy change of hydration
- Enthalpy change of solution
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