L16-posting - Solubility of gases in liquids: Another...

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1 Lecture 16 Finding Solutions: Solubility Equilibria Key Idea: Solubility constants can be used to predict how much of a substance dissolves in a solvent. Solubility of CO 2 in water Henry’s Law: K = [gas (aq) ] P gas where s gas = “Solubility” of gas in a solute in mol L 1 (i.e., just the concentration!) H s kP = gas gas Solubility of gases in liquids: Another dynamic equilibrium CO CO 2 (g) CO 2 (aq aq ) H sk P = NH 3 5.8 x 10 1 gas gas Diving and the solubility of nitrogen in blood * At a depth of 100 ft, the pressure is about 4 atm. If the diver returns to the surface too rapidly, the dissolved N 2 returns to the gas phase, causing pain in joints and bubbles in the brain! * Can you use the plot to the right to find a solution to this problem using another inert gas for the deepest divers to breathe? Water insoluble and soluble vitamins
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2 Back to glucose: How soluble is soluble? C 6 H 12 O 6 (s) + H 2 O ( l ) C 6 H 12 O 6 (aq) K c = [C 6 H 12 O 6 (aq)] At 25 o C, K c = 5.1 (~ 1 cup sugar in 1 cup of coffee, or 1 glucose molecule per 11 water molecules!)
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This note was uploaded on 04/03/2008 for the course CHEM 1A taught by Professor Nitsche during the Fall '08 term at University of California, Berkeley.

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L16-posting - Solubility of gases in liquids: Another...

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