What is AH sol? (4)

Enthalpy change when 1 mole of ionic substance dissolves in water to give a solution of infinite dilution NaCl (s) = Na+(aq) + Cl- (aq) infinite dilution = excess water so adding more water wouldn't cause anymore heat to be released or absorbed 1) solid ionic compound is broken down into gaseous atoms (AH latt) 2) gaseous ions are hydrated with water AH hyd = AH sol