CHE 2B Lecture Notes - Lecture 6: Miscibility, Molality, Hot 3
CHE 2B verified notes
6/20View all
Document Summary
Section13. 1 terminology solvent solute section b2 solutionconcentration molarity m amountofsolutelmoted volume of solution l percents massofsolution amasspercent massofsolate x 100 bvolumepercent volumeotsolate x 100 cmassvolumepercent massotsolate g x100 volumeofsolution volumeofsolutionml partsperblanke usedforlowconcentrations ufnmmaa. Solubility amountof solutethatcanbe dissolved in solvent solubility gramsotsolutedissoted givenmassvolumeofsolvent molarity 0. 03178m m l00lx l1109mg. 0. 03178 t normality mole fraction molality m varieswithtemperature becausetemperature causescolumechanges. Section 13. 3 intermolecularforces miscible ability of the compounds to homogeneouslymix insolution. Petar asymmetricmolecules water nonpoloir symmetricmolecules hydrocarbons ioniccompounds alcohol watersolublecompounds y molecularcompounds oils gasoline fat mixingsolute solvent involves energy shsom. Equilibrium supersaturated solubility saturated unsaturated temperature saturated saturationlinerepresentswheredissolution andcrystallisation arebothoccurring and inequilibriumwitheachother undersaturated solventcandissolvemoresolute supersaturated solutionhasmaesomeinsolution an equilibriumallows unstable fractional crystallization usesconceptofsolubilitytoseparatesolutions ex impuresolidwith801a 201b dissolvesolidsoluteathightemp. 601 solution and aand bwill crystallize at differenttimesmakingseparationeasier section 13. 5 factorsaffectingsolubility. Structureeffects temperature effects forgases dissolved in liquids fatsoluble nonpolar vitamins mostly c andh possibly oneohgroup watersoluble polar manyohgroups polar alongwith candh.
