Enthalpy Change Of Solution
The enthalpy of solution, enthalpy of dissolution, or heat of solution is the enthalpy change associated with the dissolution of a substance in a solvent at constant pressure resulting in infinite dilution.
The enthalpy of solution is most often expressed in kJ/mol at constant temperature. The energy change can be regarded as being made of three parts, the endothermic breaking of bonds within the solute and within the solvent, and the formation of attractions between the solute and the solvent.
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... The value of the enthalpy of solution is the sum of these individual steps ... The enthalpy of solution of an ideal solution is zero since the attractive and repulsive properties of ideal fluids are equal, irrespective of the compounds, thus mixing them does ... Enthalpy change of solution for some selected compounds hydrochloric acid -74.84 ammonium nitrate +25.69 ammonia -30.50 potassium hydroxide -57.61 caesium ...
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