HW Exam 3 - Due October 7, 2010 QUANTITATIVE ANALYSIS...

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QUANTITATIVE ANALYSIS Chemistry 315, Section 502 D ue October 7, 2010 THIRD HOMEWORK EXAM Participating cell members ________________________________________________________ _________________________________________________________________ Cell #_______ 1. (25 points) Please respond to the following questions using your own words. Identify all symbols used . a.). (6points) What is the difference between formal concentration and equilibrium concentration in a glass of Diet Coke TM ? The formal concentration is the concentration of the original ingredients in the solution and equilibrium concentration is the concentration of what is actually in the glass once the solution has reached equilibrium. When considering a glass of Diet Coke one of the ingredients is aspartame. When you calculate equilibrium you can use formal concentration or equilibrium concentration. Formal concentration would give you the concentration of aspartame in the solution. However, after a glass of Diet Coke sits out aspartame breaks down. One of the components that aspartame breaks down into is phenylalanine. The equilibrium concentration would be the concentration of what aspartame breaks down into, phenylalanine, rather than aspartame itself. b.) (6 points) What does solvation of the hydronium ion mean in a glass of water? What influence does solvation have on the properties of aqueous solutions? Solvation of the hydronium ion in a glass of water is the process of attraction between water molecules and a hydronium ion; that is, several water molecules orient their negative dipoles
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HW Exam 3 - Due October 7, 2010 QUANTITATIVE ANALYSIS...

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