Formation of a solution from two components can be considered as: (i) Pure solvent separated solvent molecules H ₁ (ii) Pure solute separated solute molecules, H ₂ (iii) Separated solvent and solute molecules solution, H ₃ Solution so formed will be ideal of:

Step-by-step solution

So the enthalpy of solution can either be endothermic, exothermic or neither ( Hsolution =0) , depending on how much heat is required or release in each step. If Hsolution = 0 , then the solution is called an ideal solution and if Hsolution >0 or Hsolution < 0 , then these solutions are called non-ideal solutions. Related Theory The enthalpy of solution depends on the strengths of intermolecular forces of the solute and solvent. If the solution is ideal, and H solution =0 , then aligned & H_ solution = H₁+ H₂+ H₃=0