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HW7%20Chap4

# HW7%20Chap4 - BME 100L Modeling Cellular and Molecular...

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BME 100L. Modeling Cellular and Molecular Systems Fall 2009 Homework 7 Chapter 4. Problems 10, 12, 13, 15, 16 Due: 5pm, November 9th Hints 10. At the standard state, calculate the Gibbs free energy change of the reaction after the following reaction, CO + 0.5O 2 CO 2 which is related to the ratio of partial pressures of the gases at equilibrium. 12. The ionization constant pK is defined on page 159. In part (e): the Gibbs free-energy change = the change in j j G n . 13. The net charge of the solution is j j j c zw h e r e z j and c j are the charge and the concentration of j th ion. If the solution is electrically neutral, then the summation above must be equal to zero. (b) There are 7 species in the solution, H 3 PO 4 , H 2 PO 4 - , HPO 4 2- , PO 4 3- , H + , Na + , and OH - (Note: [NaOH] is negligible.) We need 7 equations to solve them. At equilibrium, the 7 equations are as follows: three equilibrium constants K 1 , K 2 , K 3 that are three equations relating concentrations of different species; one equation from (a); a known [H

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HW7%20Chap4 - BME 100L Modeling Cellular and Molecular...

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