Fri February 18, 2011 By: Jaspreet Singh

sir,plz give me the explanation of electron gain enthalpy, ionisation enthalpy, enthalpy of dissociation, hydration enthalpy.sometimes i get confused with these terms.

Expert Reply
Fri February 18, 2011
Dear Student
Enthalpy---Enthalpy is the measure of the total energy of a system. 
Ionization enthalpy---heat evolved when any atom get ionized is called inonization enthalpy:
Enthalpy of dissociation-----The enthalpy change when ONE MOLE of an ionic lattice dissociates into isolated gaseous ions.
Hydration enthalpy----Hydration enthalpy of an ion is the amount of energy released when a mole of the ion dissolves in a large amount of water forming an infinite dilute solution in the process.
We hope that clarifies your query.
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