Chemistry - Born Haber cycle definitions
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7 Terms
What is the definition of lattice enthalpy?
The enthalpy change when 1 mole of an ionic solid is formed from its gaseous ions under standard conditions.
What is the definition of the first ionisation energy?
The enthalpy change when 1 mole of electrons is removed from 1 mole of gaseous atoms to form 1 mole of gaseous 1⁺ ions under standard conditions.
What is the definition of the second ionisation energy?
The enthalpy change when 1 mole of electrons is removed from 1 mole of gaseous 1⁺ ions to form 1 mole of gaseous 2⁺ ions under standard conditions.
(For the 3rd, 4th, etc., it’s the same idea—remove one electron from the previous gaseous ion.)
What is the definition of the first electron affinity?
The enthalpy change when 1 mole of electrons is added to 1 mole of gaseous atoms to form 1 mole of gaseous 1⁻ ions under standard conditions.
What is the definition of the second electron affinity?
The enthalpy change when 1 mole of electrons is added to 1 mole of gaseous 1⁻ ions to form 1 mole of gaseous 2⁻ ions under standard conditions.
What is the definition of the enthalpy change of atomisation?
The enthalpy change when 1 mole of gaseous atoms is formed from an element in its standard state under standard conditions.
What is the definition of the enthalpy change of formation?
The enthalpy change when 1 mole of a compound is formed from its constituent elements in their standard states under standard conditions.