CHM242H5 Lecture Notes - Intermolecular Force, Vapor Pressure, Capillary Action
Document Summary
Properties of liquids as compared to gases: low compressibility high density strong intermolecular forces as compared to solids: 2. lack of rigidity signi cant molecular motion greater vapour pressures resistance to increasing surface area increases with strength of intermolecular forces beading surface tension. B. capillary action - spontaneous rising of a liquid in a narrow tube. B. cohesive forces: between liquid molecules adhesive forces: between molecules of liquid and those of the tube in glass tube, concave meniscus adhesive > cohesive in glass tube, convex meniscus cohesive > adhesive. 3. liquid rises to a height where the weight of the column balances with the adhesive forces: viscosity. B. a measure of a liquid"s resistance to ow increases with the strength of intermolecular forces: vapour pressure. C. pressure of vapour present at equilibrium with liquid increases as strength of intermolecular forces decreases increases with t.
