Enthalpy definitions 0.0 / 5 ? ChemistryEnthalpyA2/A-levelOCR Created by: Ellen2745Created on: 15-11-18 09:00 Enthalpy of formation The enthalpy change when 1 mole of a compound is made from its constituent elements under standard conditions 1 of 5 Lattice enthalpy The enthalpy change when 1 mole of an ionic compound is made from its gaseous ions 2 of 5 Enthalpy of solution The enthalpy change when 1 mole of a solute is dissolved 3 of 5 Enthalpy change of hydration The enthalpy change when 1 mole of isolated ions are disslolved in water under standard conditions 4 of 5 First ionisation energy The energy required to remove 1 electron from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1+ gaseous ions 5 of 5
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