CHEM163B_HW8_solutions_2011 - Winter 2011 Chemistry 163B...

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Winter 2011 Chemistry 163B Homework #8 Problems (#40-#43) 40. The deamination of aspartic acid: is a reversible reaction catalyzed by the enzyme aspartase. For D,L-aspartic acid the equilibrium constant as function of temperature can be expressed by the equation: , log 8.188 DL a Kb T T where a=2315.5 K and b=0.01025 K -1  a. What is G at 25 C? (in kJ mol -1 ) b. Derive an equation for H as a function of T. (in kJ mol -1 ) c. What is H at 25 C? (in kJ mol -1 ) d. What is S at 25 C? (in J K -1 mol -1 ) e. * (optional) How are H and C p related? Use this relationship to obtain C p at 25 C for the deamination of aspartic acid. [Literature reference: J. L. Bada and S.L. Miller, Biochemistry 7, 3403, 1968) ] 41. *E&R P7.7 (for only 150 bar, and 550 bar) 42. (adapted from Physical Chemistry by Tinoco, Sauer, Wang, and Puglisi, pub by Prentice-Hall) In living biological cells the sodium ion concentration inside the cell [Na + ] i is kept at a lower concentration than that outside [Na + ] o by an active transport pump powered by ATP hydrolysis. The mechanism of the pump requires that each
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This note was uploaded on 03/16/2011 for the course CHEM 163B taught by Professor Geneswitkes during the Spring '11 term at University of California, Santa Cruz.

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CHEM163B_HW8_solutions_2011 - Winter 2011 Chemistry 163B...

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