CHEM 1R03 Lecture 13: student day 44 - 63 chapter 6, 7 and 8
28 Nov 2017
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Read rest of chpt 6 un,sat,super exo/endo solutions inv. Do lab excercise testing a hypothesis on dissolving pg 272 - orally. P # 3-12 solid/liquid gas/liquid gas/gas liquid/liquid solid/solid gas/solid. Solution a homogeneous (same) mixture of two or more substances. It is a solute dissolved in a solvent. eg] Dilute very little solute dissolved in solvent. Concentrated lots of solute dissolved in solute. Koolaid pop air (n2, o2, co2 etc. ) beer alloys (steel fe, c, ti, ni) foams (styrofoam, space gel) 90-95% (180-190 proof) non-alcoholic beer beer wine liquor. How does the liquid keep the solid particle dissolved? eg] polar solvent/polar solute liquid particles collide with solid and break a solute particle off sugar/water solvent is able to keep solute particle suspended. The polar oh groups on sugar are attracted to the polar water molecule. eg] non-polar solvent/polar solute. Since there is no large attraction between nonpolar gasoline and polar water the water cannot stay in solution and precipitates out.
