Enthalpy Definitions 0.0 / 5 ? ChemistryEnthalpyA2/A-levelAQA Created by: spooky0114Created on: 08-04-14 21:17 Enthalpy Change of Formation ΔHf, is the enthalpy change when 1 mole of a compound is formed from its elements in their standard states under standard conditions. 1 of 10 Bond Dissociation enthalpy Is the enthalpy change when all the bonds of the same type in 1 mole of gaseous molecules are broken. 2 of 10 Enthalpy change of atomisation of an element Is the enthaly change when 1 mole of gaseous atoms is formed from an element in its standard state 3 of 10 Enthalpy Change of atomisation of a compound Is the enthalpy change when 1 mole of compound in its standard state is converted to gaseous atoms 4 of 10 First ionisation enthalpy Is the enthalpy change when 1 mole of gaseous 1+ ions is formed from 1 mole of gaseous ions 5 of 10 Second ionisation enthalpy Is the enthalpy change when 1 mole of gaseous 2+ ions is formed from 1 mole of gaseous atoms 6 of 10 First electron affinity Is the enthalpy change when 1 mole of gaseous 1- ions is made from 1 mole of gaseous atoms 7 of 10 Second electron affinity Is the enthalpy change when 1 mole of gaseous 2- ions is made from 1 mole of gaseous 1- ions 8 of 10 Enthalpy change of hydration Is the enthalpy change when 1 mole of aqueous ions is formed from gaseous ions 9 of 10 Enthalpy change of solution Is the enthalpy change when 1 mole of solute is dissolved in sufficient solvent that no further enthalpy change occurs on further dilution 10 of 10
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