PSYCH 230 Lecture Notes - Lecture 2: Hexane, Intermolecular Force, Vitamin A
25 Aug 2016
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Document Summary
Balance between: natural tendency toward mixing, balancing intermolecular forces between. Like dissolves like : polar substances tend to dissolve in polar substances, nonpolar substances tend to dissolve in nonpolar substances. Soluble in water: strongly polar molecules that can form hydrogen bonds (acetone, soluble ionic solids (nacl, molecules with many oh groups (glucose) Not soluble in water: non polar molecules (hexane, weakley polar molecules with large non-polar groups, insoluble ionic solids. Top-hat question: which of the following solutes will not dissolve in water: ethanol, sodium chloride, hexane, acetone, glucose. Top-hat question: which of the following solutes will not dissolve in hexane: butanol, octane, vitamin a, vitamin c. Henry"s law: solubility of gases as a function of partial pressure. Raoult"s law: vapor pressure of solutions as a function of mole fractions. Freezing point depressions & boiling point elevation as a function of molality. Osmotic pressure as a function of molarity.
