TCH 7.3 - Solubility&#2 Solubility tells us a solutes ability to dissolve into a solvent o 200g of sucrose dissolves into 100ml of water so

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Unformatted text preview: Solubility  Solubility tells us a solutes ability to dissolve into a solvent o 200g of sucrose dissolves into 100ml of water, so sucrose is fairly soluble in water. o 200g of sucrose saturates the solution and no more can dissolve at this point If something will not dissolve into a solvent it is said to be insoluble . o Oil does not dissolve into water instead it forms its own layer on top of the water. o Likewise gold does not dissolve into water either. A solute that has no point of saturation is said to be infinitely soluble o Alcoholic drinks Rules for Solubility  Like dissolves like o Polar solvents will dissolve polar solutes o Nonpolar solvents will dissolve nonpolar solutes o Examples: o Water is a polar solvent, it will dissolve salts, sugar and other polar things o Acetone is nonpolar, it will dissolve paint, Styrofoam and other nonpolar things Temperature Affects Solubility  Have you ever noticed sugar dissolves much faster into hot tea than it does into iced tea? o This is because solubility increases as temperature increases The reason for this is each water molecule in a hot liquid has more kinetic energy and thus collides with the solid more vigorously o Thus the molecules in the solid are more easily separated from one another so it dissolves faster Many times a hot liquid can actually hold more solute than it can when its cold Precipitation  If a saturated solution of sugar is made at 100°C then allowed to cool to 20°C, some of the dissolved sugar will drop out of solution o This is called precipitation o A precipitate is the resulting material that falls out of the solution If you make a 100 ml saturated solution...
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This note was uploaded on 04/14/2008 for the course CHEM 1305 taught by Professor Mason during the Spring '08 term at Texas Tech.

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TCH 7.3 - Solubility&#2 Solubility tells us a solutes ability to dissolve into a solvent o 200g of sucrose dissolves into 100ml of water so

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