CHM 103 Lecture Notes - Lecture 20: Exothermic Process, Ionic Bonding, Sodium Chloride
Document Summary
A solute will not dissolve in a solvent if: forces between solute particles are too strong to be overcome by interactions with solvent particles, solvent particles are more strongly attracted to each other than to solute particles. H2o is a good dissolvent for nacl (ionic bond) but not glass. A good rule of thumb for solubility is like dissolves like". Small particles provide more surface area for solvent attack and dissolve more rapidly than larger particles. Solvent molecules move faster and have more frequent collisions with solute at higher temperatures. Stirring removes locally saturated solution from the vicinity of solute and allows unsaturated solvent to take place. The formation of a solution is a physical occurrence. Endothermic: solute + solvent + heat solution. Exothermic: solute + solvent solution + heat. Express quantitative relationships about the amount of solute contained in a specific amount of solution. The number of moles of solute contained in 1 liter of solution.
