311cFall09Homework2 - Intro Bio I(BIO 311C Fall 2009 Dr Bushart Homework#2 1 Carbond dioxide gas can be dissolved in water(this is the principle

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Intro Bio I (BIO 311C), Fall 2009, Dr. Bushart Homework #2 1. Carbond dioxide gas can be dissolved in water (this is the principle behind carbonated beverages). Water and carbon dioxide can react according to the following equation: CO 2( g ) + H 2 O ( l ) H 2 CO 3( aq ) This compound can in turn dissocate in water: H 2 CO 3 HCO 3 - + H + a. What effect would carbonation have on the pH of water? b. Would adding a small amount of lemon juice, which contains acetic acid, to carbonated water change the pH? Why or why not? 2. My favorite example of the application of Gibb’s free energy deals dissolving solid urea in water. The solution becomes cold almost immediately, indicating that the dissolving process is absorbing heat energy. Urea will dissolve in water if held at room temperature. Explain each component of the free energy equation in this example. Include a comparison of relative values of H and S to arrive at your G value (which would be described as > 0 or < 0). 3.
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This note was uploaded on 11/16/2009 for the course BIO 50465 taught by Professor Wandelt during the Spring '09 term at University of Texas at Austin.

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311cFall09Homework2 - Intro Bio I(BIO 311C Fall 2009 Dr Bushart Homework#2 1 Carbond dioxide gas can be dissolved in water(this is the principle

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