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Last updated 5:30 PM on 6/13/26
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7 Terms

1
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lattice enthalpy definition

  • enthalpy change that accompanies the formation of 1 mol of an ionic compound from its gaseous ions under standard conditions

2
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1st electron affinity

  • enthalpy change that takes place when 1 electron is added to each atom in 1 mol of gaseous atoms to form 1 mol of gaseous -1 ions.

  • OPPOSITE OF IE.

3
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2nd electron affinity

  • enthalpy change when 1 electron is added to each ion in 1 mol of gaseous 1- ions to form 1 mol of gaseous 2- ions.

4
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standard enthalpy change of atomisation

  • enthalpy change that takes place when 1 mll of gaseous atoms forms from the element in its standard state

5
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enthalpy change of hydration

  • enthalpy change when 1 mole of gaseous ions is dissolved in H2O forming 1 mol of aqueous ions

6
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standard enthalpy change of solution

  • enthalpy change when 1 mol of a compound is completely dissolved in H2O

7
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enthalpy of formation

  • when 1 mol of a compound is formed from its elements in their standard states