CHEM 202 Lecture Notes - Lecture 5: Hydrophobe, Hydrophile, Sodium Chloride
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In a solution of two compounds, two additional ifs can come into play (ion-dipole and ion or dipole-induced dipole). The main focus here is with aqueous solutions, where water is one to the two compounds. If molecular, then the following order should be considered. Yes? then it goes on the list (likely on the top) No, then add dipole-induced dipole to the list instead. Example 1- id the primary ifs for the following solutes with water: Kbr (s) : ion-dipole: enthalpy of solutions (39. 2, 39. 4) Enthalpy is a result of intermolecular forces in the liquid phase. As we had seen earlier, in pure solutions, the ifs have a direct effect on the vapor pressure and boiling point. Ifs now exist between the solute and solvent and can effect solubility and enthalpy of the solution process. Consider substance a and substance b being mixed. Pure a a interactions and b b interactions are now being replaced/competing with a b interactions.
