![]() ![]() Polydispersenatureofthepolymeristhebasisoftheconceptofaveragemolecularweight. (from the Greek words for heat and power) is the study of heat, work. ![]() ![]() If the liquid molecules are strongly attracted to the tube molecules, the liquid creeps up the inside of the tube until the weight of the liquid and the adhesive forces are in balance. Molecularweightdistributionanditssignificance:Itmayberecalledthatasimplechemical compoundscontainsmolecules,eachofwhichhasthesamemolecularweight(amonodispersedsystem), whereasapolymercontainsmolecules,eachofwhichcanhavedifferentmolecularweights(polydispersesystem). Many of the physical properties of liquids (and certain solids) can be explained in terms of intermolecular forces, the forces of attraction between molecules. We begin our study of physical chemistry with thermodynamics. ![]()
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